The effect of sex, age and race on estimating percentage body fat from body mass index: The Heritage Family Study - Jackson, A S; Stanforth, P R; Gagnon, J; Rankinen, T; Leon, A S; Rao, D C; Skinner, J S; Bouchard, C; Wilmore, J H (Int J Obes Relat Metab Disord, 2002)