Vitamin B12 Status in the Elderly as Judged by Available Biochemical MarkersRima Obeid, Wolfgang Herrmann, Heike Schorr et al.|Clinical Chemistry|2004Cited by 98
Concentrations of unmetabolized folic acid and primary folate forms in plasma after folic acid treatment in older adultsRima Obeid, Wolfgang Herrmann, Mariz Kasoha et al.|Metabolism|2010Cited by 46
One year B and D vitamins supplementation improves metabolic bone markersWolfgang Herrmann, Rima Obeid, Rudolf Eckert et al.|Clinical Chemistry and Laboratory Medicine (CCLM)|2012Cited by 29
Folic acid causes higher prevalence of detectable unmetabolized folic acid in serum than B-complex: a randomized trialRima Obeid, Wolfgang Herrmann, Susanne H. Kirsch et al.|European Journal of Nutrition|2015Cited by 22
Factors affecting the distribution of folate forms in the serum of elderly German adultsSusanne H. Kirsch, Rima Obeid, Wolfgang Herrmann et al.|European Journal of Nutrition|2012Cited by 12