Comparison of two modes of vitamin B-12 supplementation on neuroconduction and cognitive function among older people living in Santiago, Chile: a cluster randomized controlled trial. a study protocol [ISRCTN 02694183]
Sánchez, Hugo; Albala Brevis, Cecilia; Lera Marques, Lydia; Castillo, José Luis; Verdugo Latorre, Renato; Lavados Montes, Manuel; Hertrampf, Eva; Brito, Alex; Allen, Lindsay; Uauy Dagach-Imbarack, Ricardo (BIOMED CENTRAL, 2011-09-27)