["B 12 deficiency among immigrants"--conclusions based on a weak basis].
Lindgren
Anders
A
D004641:Emigration and Immigration; D006801:Humans; D018582:Sick Leave; D013548:Sweden / Q000453:epidemiology / Q000208:ethnology; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis / Q000453:epidemiology