Comparison of two modes of vitamin B12supplementation 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; Verdugo Latorre, Renato; Lavados Montes, Manuel; Hertrampf, Eva; Brito, Alex; Allen, Lindsay; Uauy Dagach-Imbarack, Ricardo (BioMed Central Ltd., 2011)