* Zwerling I, Plutchik R, Hotz M, Kling R, Rubin L, Grossman J, Siegel B: Effects of a procaine preparation (Gerovital H3) in hospitalized geriatric patients: a double-blind study. J Am Geriatr Soc, 23, 355-359, 1975 | * Zwerling I, Plutchik R, Hotz M, Kling R, Rubin L, Grossman J, Siegel B: Effects of a procaine preparation (Gerovital H3) in hospitalized geriatric patients: a double-blind study. J Am Geriatr Soc, 23, 355-359, 1975 |