Paradoxical association between body mass index and in-hospital mortality in elderly patients with chronic obstructive pulmonary disease in Japan.
Yamauchi Y, Hasegawa W, Yasunaga H, Sunohara M, Jo T, Takami K, Matsui H, Fushimi K, Nagase T. Paradoxical association between body mass index and in-hospital mortality in elderly patients with chronic obstructive pulmonary disease in Japan. Int J Chron Obstruct Pulmon Dis. 2014; 9:1337-46.