Mild hyponatremia is associated with low skeletal muscle mass, physical function impairment, and depressive mood in the elderly

Chisato Fujisawa, Hiroyuki Umegaki, Taiki Sugimoto, Satoshi Samizo, Chi Hsien Huang, Haruki Fujisawa, Yoshihisa Sugimura, Masafumi Kuzuya, Kenji Toba, Takashi Sakurai