An association between serum γ-glutamyltransferase and proteinuria in drinkers and non-drinkers: a Japanese nationwide cross-sectional survey

Toshihiro Ishigami, Ryohei Yamamoto, Yasuyuki Nagasawa, Yoshitaka Isaka, Hiromi Rakugi, Kunitoshi Iseki, Kunihiro Yamagata, Kazuhiko Tsuruya, Hideaki Yoshida, Shouichi Fujimoto, Koichi Asahi, Issei Kurahashi, Yasuo Ohashi, Toshiki Moriyama, Tsuyoshi Watanabe