{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T17:03:28Z","timestamp":1781715808717,"version":"3.54.5"},"reference-count":15,"publisher":"Norwegian Medical Association","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Tidsskr Nor Legeforen","Tidsskriftet"],"DOI":"10.4045\/tidsskr.21.0749","type":"journal-article","created":{"date-parts":[[2022,9,6]],"date-time":"2022-09-06T08:50:28Z","timestamp":1662454228000},"source":"Crossref","is-referenced-by-count":0,"title":["Fylkesforskjeller i utredning og behandling av vitamin B12-mangel"],"prefix":"10.4045","volume":"142","author":[{"given":"Gunnar","family":"Mouland","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian Lie","family":"Berg","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammad Nouri","family":"Sharikabad","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hilchen Thode","family":"Sommerschild","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2479","published-online":{"date-parts":[[2022,9,5]]},"reference":[{"key":"ref=1","doi-asserted-by":"crossref","unstructured":"Green\u00a0R, Allen\u00a0LH, Bj\u00f8rke-Monsen\u00a0AL et al. Vitamin B12 deficiency. Nat Rev Dis Primers 2017; 3: 17040. PubMed: http:\/\/www.ncbi.nlm.nih.gov\/entrez\/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=28660890&dopt=Abstract, Crossref: http:\/\/dx.doi.org\/10.1038%2Fnrdp.2017.40","DOI":"10.1038\/nrdp.2017.40"},{"key":"ref=2","doi-asserted-by":"crossref","unstructured":"Carmel\u00a0R. Prevalence of undiagnosed pernicious anemia in the elderly. Arch Intern Med 1996; 156: 1097\u2013100. PubMed: http:\/\/www.ncbi.nlm.nih.gov\/entrez\/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8638997&dopt=Abstract, Crossref: http:\/\/dx.doi.org\/10.1001%2Farchinte.1996.00040041097008","DOI":"10.1001\/archinte.1996.00040041097008"},{"key":"ref=3","unstructured":"Legemiddelh\u00e5ndboka. T4.1.2.1 Vitamin B12-mangel.\u00a0https:\/\/www.legemiddelhandboka.no\/T4.1.2.1\/Vitamin_B_12_-mangel Lest 18.6.2022."},{"key":"ref=4","doi-asserted-by":"crossref","unstructured":"Haffner\u00a0J, Hager\u00a0HB, Iversen\u00a0PO et al. Ikke n\u00f8dvendig med injeksjoner ved vitamin B12-mangel. Tidsskr Nor Legeforen 2018; 138: 1602\u20133. PubMed: http:\/\/www.ncbi.nlm.nih.gov\/entrez\/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=30378402&dopt=Abstract, Crossref: http:\/\/dx.doi.org\/10.4045%2Ftidsskr.18.0668","DOI":"10.4045\/tidsskr.18.0668"},{"key":"ref=5","unstructured":"Nyquist E, Hager HB, Iversen PO et al. Utredning og behandling av vitamin B12-mangel hos voksne. 1. utg., 2018. https:\/\/www.legeforeningen.no\/contentassets\/032228f21383459987f94f80615ea957\/retningslinjer-vitamin-b12_endelig-120318.pdf Lest 18.6.2022."},{"key":"ref=6","unstructured":"Nyquist E, Hager HB, Iversen PO et al. Utredning og behandling av vitamin B12-mangel hos voksne. 2. utg., 2022. https:\/\/www.legeforeningen.no\/contentassets\/032228f21383459987f94f80615ea957\/retningslinjer-vitamin-b12-endelig-en-14_03_22.docx.pdf Lest 18.6.2022."},{"key":"ref=7","unstructured":"Felleskatalogen. TrioBe \u00abViatris\u00bb. https:\/\/www.felleskatalogen.no\/medisin\/triobe-viatris-564846 Lest 18.6.2022."},{"key":"ref=8","unstructured":"Senter for klinisk dokumentasjon og evaluering (SKDE). Indikatorer for m\u00e5ling av uberettiget variasjon. Utredning fra SKDE for de regionale helseforetakene. November 2016. https:\/\/helse-nord.no\/Documents\/SKDE\/SKDE%20Publikasjoner\/Indikatorer%20for%20m%C3%A5ling%20av%20uberettiget%20variasjon%20(SKDE%202016).pdf Lest 13.8.2022."},{"key":"ref=9","unstructured":"Apotekforeningen. Store fylkesforskjeller i legemiddelbruken. Pressemelding 21.2.2021. https:\/\/www.mynewsdesk.com\/no\/apotekforeningen\/pressreleases\/store-fylkesforskjeller-i-legemiddelbruken-3075580 Lest 18.6.2022."},{"key":"ref=10","unstructured":"Amundsen EK. Medisinsk biokjemi: Oversikt og variasjon i bestilling av analyser i prim\u00e6rhelsetjenesten og p\u00e5 poliklinikker i spesialisthelsetjenesten i Norge i 2018. Masteroppgave. Oslo: Institutt for helse og samfunn, Universitetet i Oslo, 2019. https:\/\/www.duo.uio.no\/bitstream\/handle\/10852\/73847\/EKAmundsen-master-helseadministrasjon-01-12-19.pdf?sequence=1&isAllowed=y Lest 18.6.2022."},{"key":"ref=11","unstructured":"Austad\u00a0B, Hetlevik\u00a0I, Mj\u00f8lstad\u00a0BP et al. Applying clinical guidelines in general practice: a qualitative study of potential complications. BMC Fam Pract 2016; 17: 92. PubMed: http:\/\/www.ncbi.nlm.nih.gov\/entrez\/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=27449959&dopt=Abstract, Crossref: http:\/\/dx.doi.org\/10.1186%2Fs12875-016-0490-3"},{"key":"ref=12","doi-asserted-by":"crossref","unstructured":"Bramness\u00a0JG. Bruk av litium i Oslo og i Sogn og Fjordane. Tidsskr Nor Legeforen 2009; 129: 855\u20137. PubMed: http:\/\/www.ncbi.nlm.nih.gov\/entrez\/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=19415083&dopt=Abstract, Crossref: http:\/\/dx.doi.org\/10.4045%2Ftidsskr.08.0276","DOI":"10.4045\/tidsskr.08.0276"},{"key":"ref=13","unstructured":"Folkehelseinstituttet. Bruk av vanedannende legemidler i Norge 2005\u20132013. Rapport, 2014. https:\/\/www.fhi.no\/globalassets\/dokumenterfiler\/rapporter\/2014\/bruk-av-vanedannende-legemidler-pdf.pdf Lest 18.6.2022."},{"key":"ref=14","unstructured":"Senter for klinisk dokumentasjon og evaluering (SKDE). Likeverdige helsetjenester \u2013 uansett hvor du bor? Helseatlas. https:\/\/helseatlas.no\/ Lest 18.6.2022."},{"key":"ref=15","unstructured":"Legeforeningen. For mye, for lite eller akkurat passe? Om variasjon, over- og underforbruk i helsetjenesten. Rapport, 2016. https:\/\/www.legeforeningen.no\/contentassets\/ba01fe487d894fd08516b5a803ba7b7b\/for-mye_for-lite-eller-akkurat-passe.pdf Lest 18.6.2022."}],"container-title":["Tidsskrift for Den norske legeforening"],"original-title":[],"language":"no","deposited":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T16:06:56Z","timestamp":1781712416000},"score":1,"resource":{"primary":{"URL":"https:\/\/tidsskriftet.no\/2022\/09\/kort-rapport\/fylkesforskjeller-i-utredning-og-behandling-av-vitamin-b12-mangel"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9,5]]},"references-count":15,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2022,9,6]]}},"URL":"https:\/\/doi.org\/10.4045\/tidsskr.21.0749","relation":{},"ISSN":["0029-2001","0807-7096"],"issn-type":[{"value":"0029-2001","type":"print"},{"value":"0807-7096","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,9,5]]}}}