{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:44:33Z","timestamp":1787013873385,"version":"build-2736575974"},"reference-count":30,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2022,5,2]],"date-time":"2022-05-02T00:00:00Z","timestamp":1651449600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Paediatrica"],"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aim<\/jats:title>\n                    <jats:p>(1) To explore the adherence of recommendations of vitamin D supplementation to children aged 0\u20134\u00a0years. (2) To compare serum levels of vitamin D in children and adolescents aged 0\u201317\u00a0years originating from different parts of the world. (3) To compare levels between boys and girls and (4) To determine seasonal variation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A review of vitamin D levels in children with parents from different parts of the world was conducted. 2502 children aged 0\u201317\u00a0years were included between 22\u00a0January 2004 and 17\u00a0May 2021.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Fifty\u2010nine of 363 children aged 0\n                      <jats:bold>\u2013<\/jats:bold>\n                      4\u00a0years received the recommended vitamin D supplementation. Children from all parts of the world had lower levels of serum 25(OH)D than Swedish children. Girls from the Indian subcontinent, Middle East and Africa had the lowest levels of s\u201025(OH)D. Seasonal variation with higher levels during the summer was seen in children from Sweden, the rest of Europe, Russia and Latin America. Overall prevalence of vitamin D deficiency (\u226425\u00a0nmol\/L) was 928\/2198 (42%) in children not receiving supplementation. Seven children had clinical rickets.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Adherence of giving children aged 0\u20134\u00a0years the recommended vitamin D supplementation was very low. Vitamin D deficiency is common in immigrant children of all ages in Sweden.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/apa.16372","type":"journal-article","created":{"date-parts":[[2022,4,26]],"date-time":"2022-04-26T13:16:27Z","timestamp":1650978987000},"page":"1596-1602","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Ethnicity, gender and seasonal variations all play a role in vitamin D deficiency"],"prefix":"10.1111","volume":"111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3508-5249","authenticated-orcid":false,"given":"Birger","family":"Trollfors","sequence":"first","affiliation":[{"name":"Department of Paediatrics Sahlgrenska University Hospital  Gothenburg 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