Nexo, Ebba Holo-transcobalamin is an early marker of changes in cobalamin homeostasis. A randomized placebo-controlled study. [electronic resource] - Clinical chemistry Oct 2002 - 1768-71 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0009-9147 Subjects--Topical Terms: AdultAgedAged, 80 and overBiomarkers--bloodHomeostasisHumansMiddle AgedTranscobalamins--analysisVitamin B 12--administration & dosage