{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T16:56:33Z","timestamp":1782406593507,"version":"3.54.5"},"reference-count":63,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2020,5,29]],"date-time":"2020-05-29T00:00:00Z","timestamp":1590710400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010663","name":"H2020 European Research Council","doi-asserted-by":"publisher","award":["689954"],"award-info":[{"award-number":["689954"]}],"id":[{"id":"10.13039\/100010663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Low-cost sensors based on the optical particle counter (OPC) are increasingly being used to collect particulate matter (PM) data at high space and time resolution. In spite of their huge explorative potential, practical guidelines and recommendations for their use are still limited. In this work, we outline a few best practices for the optimal use of PM low-cost sensors based on the results of an intensive field campaign performed in Bologna (44\u00b030\u2032 N, 11\u00b021\u2032 E; Italy) under different weather conditions. Briefly, the performances of a series of sensors were evaluated against a calibrated mainstream OPC with a heated inlet, using a robust approach based on a suite of statistical indexes capable of evaluating both correlations and biases in respect to the reference sensor. Our results show that the sensor performance is sensibly affected by both time resolution and weather with biases maximized at high time resolution and high relative humidity. Optimization of PM data obtained is therefore achievable by lowering time resolution and applying suitable correction factors for hygroscopic growth based on the inherent particle size distribution.<\/jats:p>","DOI":"10.3390\/s20113073","type":"journal-article","created":{"date-parts":[[2020,6,2]],"date-time":"2020-06-02T09:19:27Z","timestamp":1591089567000},"page":"3073","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":45,"title":["How to Get the Best from Low-Cost Particulate Matter Sensors: Guidelines and Practical Recommendations"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8402-7611","authenticated-orcid":false,"given":"Erika","family":"Brattich","sequence":"first","affiliation":[{"name":"Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7047-6213","authenticated-orcid":false,"given":"Alessandro","family":"Bracci","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0029-4403","authenticated-orcid":false,"given":"Alessandro","family":"Zappi","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cG. Ciamician\u201d, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0786-8297","authenticated-orcid":false,"given":"Pietro","family":"Morozzi","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cG. Ciamician\u201d, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvana","family":"Di Sabatino","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1283-7679","authenticated-orcid":false,"given":"Federico","family":"Porc\u00f9","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5228-1076","authenticated-orcid":false,"given":"Francesca","family":"Di Nicola","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1778-672X","authenticated-orcid":false,"given":"Laura","family":"Tositti","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cG. 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Climatol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1585","DOI":"10.1029\/97JD02495","article-title":"Effects of fluid dynamical stirring and mixing on the deactivation of stratospheric chlorine","volume":"103","author":"Tan","year":"1998","journal-title":"J. Geophys. Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1007\/s13280-019-01164-3","article-title":"Using green infrastructure to improve urban air quality (GI4AQ)","volume":"49","author":"Hewitt","year":"2020","journal-title":"Ambio"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"e00070","DOI":"10.1016\/j.ohx.2019.e00070","article-title":"Smart Citizen Kit and Station: An open environmental monitoring system for citizen participation and scientific experimentation","volume":"6","author":"Camprodon","year":"2019","journal-title":"HardwareX"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"221","DOI":"10.3389\/feart.2019.00221","article-title":"Low-Cost Environmental Sensor Networks: Recent Advances and Future Directions","volume":"7","author":"Mao","year":"2019","journal-title":"Front. Earth Sci."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Ahangar, F.E., Freedman, F.R., and Venkatram, A. (2019). Using Low-Cost Air Quality Sensor Networks to Improve the Spatial and Temporal Resolution of Concentration Maps. Int. J. Environ. Res. Public Health, 16.","DOI":"10.3390\/ijerph16071252"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1016\/j.envint.2017.05.005","article-title":"Mapping urban air quality in near real-time using observations from low-cost sensors and model information","volume":"106","author":"Schneider","year":"2017","journal-title":"Environ. Int."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/j.atmosenv.2018.09.030","article-title":"Use of networks of low cost air quality sensors to quantify air quality in urban settings","volume":"194","author":"Popoola","year":"2018","journal-title":"Atmos. Environ."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1135","DOI":"10.1016\/j.jaerosci.2004.04.004","article-title":"On the equivalence of gravimetric PM data with TEOM and beta-attenuation measurements","volume":"35","author":"Hauck","year":"2004","journal-title":"J. Aerosol Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1079","DOI":"10.1080\/10473289.1991.10466903","article-title":"Continuous PM-10 measurements using the tapered element oscilating microbalance","volume":"41","author":"Patashnick","year":"1991","journal-title":"J. Air Waste Manage. Assoc."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s41810-019-00039-0","article-title":"Atmospheric Aerosols: Some Highlights and Highlighters, 1950 to 2018","volume":"3","author":"Hidy","year":"2019","journal-title":"Aerosol Sci. Eng."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1183","DOI":"10.1289\/ehp.1104389","article-title":"Respiratory Health Effects of Airborne Particulate Matter: The Role of Particle Size, Composition, and Oxidative Potential\u2014The RAPTES Project","volume":"120","author":"Strak","year":"2012","journal-title":"Environ. Health Perspect."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Capello, F., and Gaddi, A. (2018). Physical and chemical properties of airborne particulate matter. Clinical Handbook of Air Pollution-Related Diseases, Springer.","DOI":"10.1007\/978-3-319-62731-1"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1007\/s10661-020-8118-4","article-title":"Field performance of a low-cost sensor in the monitoring of particulate matter in Santiago, Chile","volume":"192","author":"Tagle","year":"2020","journal-title":"Environ. Monit. Assess."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.atmosenv.2008.09.051","article-title":"Effect of climate change on air quality","volume":"43","author":"Jacob","year":"2009","journal-title":"Atmos. Environ."},{"key":"ref_17","unstructured":"Seinfeld, J.H., and Pandis, S.N. (2016). Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, John Wiley & Sons. [3rd ed.]."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"6733","DOI":"10.5194\/acp-18-6733-2018","article-title":"Synoptic meteorological modes of variability for fine particulate matter (PM2.5) air quality in major metropolitan regions of China","volume":"18","author":"Leung","year":"2018","journal-title":"Atmos. Chem. Phys."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"4380","DOI":"10.1002\/2014JD021641","article-title":"Investigation of the sources and evolution processes of severe haze pollution in Beijing in January 2013","volume":"119","author":"Sun","year":"2014","journal-title":"J. Geophys. Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"188","DOI":"10.1016\/j.atmosenv.2018.09.041","article-title":"Size-resolved hygroscopic behavior of atmospheric aerosols during heavy aerosol pollution episodes in Beijing in December 2016","volume":"194","author":"Wang","year":"2018","journal-title":"Atmos. Environ."},{"key":"ref_21","first-page":"932","article-title":"Long-term field evaluation of the Plantower PMS low-cost particulate matter sensors","volume":"245","author":"Crilley","year":"2019","journal-title":"Atmos. Meas. Tech. Discuss."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"932","DOI":"10.1016\/j.envpol.2018.11.065","article-title":"Long-term field evaluation of the Plantower PMS low-cost particulate matter sensors","volume":"245","author":"Sayahi","year":"2019","journal-title":"Environ. Pollut."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1038\/s41598-019-43716-3","article-title":"Long-term field comparison of multiple low-cost particulate matter sensors in an outdoor urban environment","volume":"9","author":"Bulot","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"4643","DOI":"10.5194\/amt-12-4643-2019","article-title":"Characterising low-cost sensors in highly portable platforms to quantify personal exposure in diverse environments","volume":"12","author":"Chatzidiakou","year":"2019","journal-title":"Atmos. Meas. Tech."},{"key":"ref_25","first-page":"1","article-title":"Laboratory evaluation of particle size-selectivity of optical low-cost particulate matter sensors","volume":"13","author":"Kuula","year":"2019","journal-title":"Atmos. Meas. Tech. Discuss."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"5281","DOI":"10.5194\/amt-9-5281-2016","article-title":"Community Air Sensor Network (CAIRSENSE) project: Evaluation of low-cost sensor performance in a suburban environment in the southeastern United States","volume":"9","author":"Jiao","year":"2016","journal-title":"Atmos. Meas. Tech."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"491","DOI":"10.1016\/j.envpol.2016.12.039","article-title":"Ambient and laboratory evaluation of a low-cost particulate matter sensor","volume":"221","author":"Kelly","year":"2017","journal-title":"Environ. Pollut."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Mukherjee, A., Stanton, L.G., Graham, A.R., and Roberts, P.T. (2017). Assessing the utility of low-cost particulate matter sensors over a 12-week period in the Cuyama valley of California. Sensors, 17.","DOI":"10.3390\/s17081805"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1352","DOI":"10.1080\/02786826.2016.1232859","article-title":"Evaluation of the Alphasense optical particle counter (OPC-N2) and the Grimm portable aerosol spectrometer (PAS-1.108)","volume":"50","author":"Sousan","year":"2016","journal-title":"Aerosol Sci. Technol."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"4823","DOI":"10.5194\/amt-11-4823-2018","article-title":"Field evaluation of low-cost particulate matter sensors in high- and low-concentration environments","volume":"11","author":"Zheng","year":"2019","journal-title":"Atmos. Meas. Tech."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"872","DOI":"10.1007\/s11356-013-1911-7","article-title":"Source apportionment of particulate matter in a large city of southeastern Po Valley (Bologna, Italy)","volume":"21","author":"Tositti","year":"2014","journal-title":"Environ. Sci. Pollut. Res. Int."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"10129","DOI":"10.5194\/acp-19-10129-2019","article-title":"Transport of Po Valley aerosol pollution to the northwestern Alps-Part 2: Long-term impact on air quality","volume":"19","author":"Gobbi","year":"2019","journal-title":"Atmos. Chem. Phys."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"2897","DOI":"10.5194\/amt-11-2897-2018","article-title":"Vertical profiles of aerosol mass concentration derived by unmanned airborne in situ and remote sensing instruments during dust events","volume":"11","author":"Mamali","year":"2018","journal-title":"Atmos. Meas. Tech."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"424","DOI":"10.1016\/j.scitotenv.2014.07.067","article-title":"Impact of atmospheric boundary layer depth variability and wind reversal on the diurnal variability of aerosol concentration at a valley site","volume":"496","author":"Pal","year":"2014","journal-title":"Sci. Total Environ."},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Karagulian, F., Barbiere, M., Kotsev, A., Spinelle, L., Gerboles, M., Lagler, F., Redon, N., Crunaire, S., and Borowiak, A. (2019). Review of the performance of low-cost sensors for air quality monitoring. Atmosphere, 10.","DOI":"10.3390\/atmos10090506"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"1721","DOI":"10.5194\/amt-9-1721-2016","article-title":"LOAC: A small aerosol optical particle counter\/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles-Part 1: Principle of measurements and instrument evaluation","volume":"9","author":"Renard","year":"2016","journal-title":"Atmos. Meas. Tech."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"389","DOI":"10.5194\/angeo-37-389-2019","article-title":"Measurements of aerosols and charged particles on the BEXUS18 stratospheric balloon","volume":"37","author":"Brattich","year":"2019","journal-title":"Ann. Geophys."},{"key":"ref_38","unstructured":"(2018). The British Standard Institution ISO 21501-4:2018 Determination of Particle Size Distribution\u2014Single Particle Light Interaction Methods\u2014Part 4: Light Scattering Airborne Particle Counter for Clean Spaces, ISO\/TC 24\/SC 4 Particle characterization."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/0021-8502(72)90147-4","article-title":"The optical particle counter: Cross-sensitivity and coincidence","volume":"3","author":"Jaenicke","year":"1972","journal-title":"J. Aerosol Sci."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"717","DOI":"10.1016\/0004-6981(74)90163-2","article-title":"Experimental studies of optical particle counters","volume":"8","author":"Liu","year":"1974","journal-title":"Atmos. Environ."},{"key":"ref_41","unstructured":"Kohli, R., and Mittal, K.L. (2012). Size Analysis and Identification of Particles. Developments in Surface Contamination and Cleaning: Detection, Characterization, and Analysis of Contaminants, Elsevier."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"085901","DOI":"10.1088\/0957-0233\/21\/8\/085901","article-title":"Small-angle light scattering by airborne particulates: Environment S.A. continuous particulate monitor","volume":"21","author":"Renard","year":"2010","journal-title":"Meas. Sci. Technol."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"709","DOI":"10.5194\/amt-11-709-2018","article-title":"Evaluation of a low-cost optical particle counter (Alphasense OPC-N2) for ambient air monitoring","volume":"11","author":"Crilley","year":"2018","journal-title":"Atmos. Meas. Tech."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"8543","DOI":"10.1016\/j.atmosenv.2008.07.056","article-title":"Estimation of particle mass concentration in ambient air using a particle counter","volume":"42","author":"Tittarelli","year":"2008","journal-title":"Atmos. Environ."},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Di Antonio, A., Popoola, O.A.M., Ouyang, B., Saffell, J., and Jones, R.L. (2018). Developing a relative humidity correction for low-cost sensors measuring ambient particulate matter. Sensors, 18.","DOI":"10.3390\/s18092790"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"S189","DOI":"10.1097\/01.ede.0000392262.57099.36","article-title":"A portable device capable to deliver to the airways filtered air with a submicrometric particle removal efficiency of about 90%","volume":"22","author":"Invernizzi","year":"2011","journal-title":"Epidemiology"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"957","DOI":"10.1016\/j.atmosenv.2010.11.004","article-title":"Inferring deposition velocities from changes in aerosol size distributions downwind of a roadway","volume":"43","author":"Zhu","year":"2011","journal-title":"Atmos. Environ."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1016\/j.atmosenv.2016.05.013","article-title":"Online molecular characterization of fine particulate matter in Port Angeles, WA: Evidence for a major impact from residential wood smoke","volume":"138","author":"Gaston","year":"2016","journal-title":"Atmos. Environ."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"2947","DOI":"10.5194\/acp-19-2947-2019","article-title":"Fine dust emissions from active sands at coastal Oceano Dunes, California","volume":"19","author":"Huang","year":"2019","journal-title":"Atmos. Chem. Phys."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"202","DOI":"10.1016\/j.enbuild.2019.06.029","article-title":"Energy consumption, indoor thermal comfort and air quality in a commercial office with retrofitted heat, ventilation and air conditioning (HVAC) system","volume":"201","author":"Che","year":"2019","journal-title":"Energy Build."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"382","DOI":"10.1080\/01621459.1974.10482962","article-title":"The influence curve and its role in robust estimation","volume":"69","author":"Hampel","year":"1974","journal-title":"J. Am. Stat. Assoc."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"1635","DOI":"10.1016\/j.compchemeng.2004.01.009","article-title":"On-line outlier detection and data cleaning","volume":"28","author":"Liu","year":"2004","journal-title":"Comput. Chem. Eng."},{"key":"ref_53","unstructured":"Revelle, W. (2020, May 01). Psych: Procedures for Psychological, Psychometric, and Personality Research. Available online: https:\/\/cran.r-project.org\/web\/packages\/psych\/index.html."},{"key":"ref_54","unstructured":"R Development Core Team 3.0.1 (2020, May 01). A Language and Environment for Statistical Computing. Available online: http:\/\/www.r-project.org."},{"key":"ref_55","doi-asserted-by":"crossref","unstructured":"Pal, R. (2017). Chapter 4-Validation methodologies. Predictive Modeling of Drug Sensitivity, Academic Press.","DOI":"10.1016\/B978-0-12-805274-7.00004-X"},{"key":"ref_56","unstructured":"Perpinan Lamigueiro, O. (2020, May 01). Tdr: Target Diagram. R Package Version 0.13. Available online: https:\/\/cran.r-project.org\/package=tdr."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"565","DOI":"10.4209\/aaqr.2017.10.0418","article-title":"Field test of several low-cost particulate matter sensors in high and low concentration urban environments","volume":"18","author":"Johnson","year":"2018","journal-title":"Aerosol Air Qual. Res."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1080\/02786826.2019.1623863","article-title":"Fine particle mass monitoring with low-cost sensors: Corrections and long-term performance evaluation","volume":"54","author":"Malings","year":"2020","journal-title":"Aerosol Sci. Technol."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"1123","DOI":"10.5194\/acp-16-1123-2016","article-title":"Particle hygroscopicity and its link to chemical composition in the urban atmosphere of Beijing, China, during summertime","volume":"16","author":"Wu","year":"2016","journal-title":"Atmos. Chem. Phys."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"1616","DOI":"10.1016\/j.atmosenv.2006.10.038","article-title":"Correction in aerosol mass concentration measurements with humidity difference between ambient and instrumental conditions","volume":"41","author":"Bagtasa","year":"2007","journal-title":"Atmos. Environ."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1080\/10962247.2016.1241195","article-title":"Feasibility of using low-cost portable particle monitors for measurement of fine and coarse particulate matter in urban ambient air","volume":"67","author":"Han","year":"2017","journal-title":"J. Air Waste Manag. Assoc."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"4883","DOI":"10.5194\/amt-11-4883-2018","article-title":"The influence of humidity on the performance of a low-cost air particle mass sensor and the effect of atmospheric fog","volume":"11","author":"Jayaratne","year":"2018","journal-title":"Atmos. Meas. Tech."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"4215","DOI":"10.1016\/S1352-2310(00)00239-9","article-title":"Formation and cycling of aerosols in the global troposphere","volume":"34","author":"Raes","year":"2000","journal-title":"Atmos. Environ."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/11\/3073\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T09:33:42Z","timestamp":1760175222000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/11\/3073"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,5,29]]},"references-count":63,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2020,6]]}},"alternative-id":["s20113073"],"URL":"https:\/\/doi.org\/10.3390\/s20113073","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,5,29]]}}}