New diagnosis and classification of obesity - Matsuzawa, Y; SYI, Inoue; Sakata, T; Saito, K; Sato, Y; Shirai, K; Ono, M; Miyazaki, S; Tokunaga, K; Fukagawa, K; Yamanouchi, K; Nakamura, T (J Jpn Soc Study Obes, 2006)