title: Effect of repeated freezing and thawing on vitamins and hormones in serum.
authors: Dept. of Epidemiology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205.
authors: A W
authors: AW
authors: Hsing
authors: G W
authors: GW
authors: Comstock
authors: B F
authors: BF
authors: Polk
mesh_terms: D001793:Blood Preservation; D015925:Cryopreservation; D006728:Hormones / Q000097:blood*; D006801:Humans; D014815:Vitamins / Q000097:blood*
chemical_list: D006728:Hormones; D014815:Vitamins