Effects of oral amino acid supplementation on Multidimensional Prognostic Index in hospitalized older patients: a multicenter randomized, double-blind, placebo-controlled pilot stu... oleh Volpato S, Custureri R, Puntoni M, Bianchi L, Daragjati J, Garaboldi S, Simonato M, Greco A, Rizzo E, Dal Santo P, Mangiacotti A, Zigoura E, Siri G, Pilotto A