Vitamin B-12 status, particularly holotranscobalamin II and methylmalonic acid concentrations, and hyperhomocysteinemia in vegetariansWolfgang Herrmann, Jürgen Geisel, Heike Schorr et al.|American Journal of Clinical Nutrition|2003Cited by 252
Functional Vitamin B12 Deficiency and Determination of Holotranscobalamin in Populations at RiskWolfgang Herrmann, Jürgen Geisel, Rima Obeid et al.|Clinical Chemistry and Laboratory Medicine (CCLM)|2003Cited by 178
The Usefulness of Holotranscobalamin in Predicting Vitamin B12 Status in Different Clinical SettingsWolfgang Herrmann, Jürgen Geisel, Rima Obeid et al.|Current Drug Metabolism|2005Cited by 111
Vitamin B12 Status in the Elderly as Judged by Available Biochemical MarkersRima Obeid, Wolfgang Herrmann, Heike Schorr et al.|Clinical Chemistry|2004Cited by 98
The impact of vegetarianism on some haematological parametersRima Obeid, Wolfgang Herrmann, Jürgen Geisel et al.|European Journal Of Haematology|2002Cited by 85