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Epidemiol"},{"key":"ref41","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1186\/1471-2393-7-28","article-title":"Assessing fetal growth impairments based on family data as a tool for identifying high-risk babies. 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Epidemiological research and surveillance throughout 30 years","volume":"79","author":"LM Irgens","year":"2000","journal-title":"Acta Obstet Gynecol Scand"},{"key":"ref48","doi-asserted-by":"crossref","first-page":"213","DOI":"10.2105\/AJPH.89.2.213","article-title":"Errors in gestational age: evidence of bleeding early in pregnancy","volume":"89","author":"HK Gjessing","year":"1999","journal-title":"Am J Public Health"},{"issue":"1","key":"ref49","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1542\/peds.2011-1037","article-title":"Committee on Fetus and Newborn. Standard terminology for fetal, infant, and perinatal deaths","volume":"128","author":"WD Barfield","year":"2011","journal-title":"Pediatrics"},{"key":"ref50","unstructured":"World Health Organization. International Classification of Diseases, Revision 8. 1965. Available: <ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.wolfbane.com\/icd\/icd8.htm\" xlink:type=\"simple\">http:\/\/www.wolfbane.com\/icd\/icd8.htm<\/ext-link> Accessed 24 Jan 2017."},{"key":"ref51","unstructured":"World Health Organization. ICD-10: International Statistical Classification of Diseases and Related Health Problems. Tenth Revision: Volume 2: Second Edition. 2013. Available: <ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.who.int\/classifications\/icd\/ICD10Volume2_en_2010.pdf?ua=1\" xlink:type=\"simple\">http:\/\/www.who.int\/classifications\/icd\/ICD10Volume2_en_2010.pdf?ua=1<\/ext-link> Accessed 24 Jan 2017."},{"issue":"5","key":"ref52","doi-asserted-by":"crossref","first-page":"615","DOI":"10.1097\/01.ede.0000135174.63482.43","article-title":"A structural approach to selection bias","volume":"15","author":"MA Hern\u00e1n","year":"2004","journal-title":"Epidemiology"},{"key":"ref53","article-title":"Methods for Mediation and Interaction","author":"TJ VanderWeele","year":"2014"},{"key":"ref54","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1136\/bmj.326.7382.219","article-title":"Interaction revisited: the difference between two estimates","volume":"326","author":"DG Altman","year":"2003","journal-title":"Br Med J"},{"issue":"3","key":"ref55","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1177\/096228020101000302","article-title":"Attributable fractions: fundamental concepts and their visualization","volume":"10","author":"GE Eide","year":"2001","journal-title":"Stat Methods Med Res"},{"issue":"2","key":"ref56","doi-asserted-by":"crossref","first-page":"317","DOI":"10.1530\/EJE-11-0866","article-title":"Impact of ethnicity on gestational diabetes identified with the WHO and the modified International Association of Diabetes and Pregnancy Study Groups criteria: a population-based cohort study","volume":"166","author":"AK Jenum","year":"2012","journal-title":"Eur J Endocrinol"},{"key":"ref57","unstructured":"Norwegian Institute of Public Health. Diabetes in Norway\u2014Public Health Report 2014. 2016. Available: <ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/www.fhi.no\/en\/op\/public-health-report-2014\/health\u2014disease\/diabetes-in-norway\u2014public-health-\/\" xlink:type=\"simple\">https:\/\/www.fhi.no\/en\/op\/public-health-report-2014\/health\u2014disease\/diabetes-in-norway\u2014public-health-\/<\/ext-link> Updated 18.04.2016. Accessed 24 Jan 2017."},{"issue":"5","key":"ref58","doi-asserted-by":"crossref","first-page":"713","DOI":"10.1097\/EDE.0b013e31825fa230","article-title":"Sibling comparison designs: bias from non-shared confounders and measurement error","volume":"23","author":"T Frisell","year":"2012","journal-title":"Epidemiology"},{"issue":"24","key":"ref59","doi-asserted-by":"crossref","first-page":"2477","DOI":"10.1056\/NEJMoa042973","article-title":"Effect of Treatment of Gestational Diabetes Mellitus on Pregnancy Outcomes","volume":"352","author":"CA Crowther","year":"2005","journal-title":"N Engl J Med"},{"issue":"14","key":"ref60","doi-asserted-by":"crossref","first-page":"1339","DOI":"10.1056\/NEJMoa0902430","article-title":"A multicenter, randomized trial of treatment for mild gestational diabetes","volume":"361","author":"MB Landon","year":"2009","journal-title":"N Engl J Med"},{"issue":"Suppl 1","key":"ref61","first-page":"S114","article-title":"Management of diabetes in pregnancy. 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