Chronic obstructive pulmonary disease severity in middle-aged and older men with osteoporosis associates with decreased bone formation oleh Manabu Tsukamoto, Toshiharu Mori, Eiichiro Nakamura, Yasuaki Okada, Hokuto Fukuda, Yoshiaki Yamanaka, Ken Sabanai, Ke-Yong Wang, Takeshi Hanagiri, Satoshi Kuboi, Kazuhiro Yatera, Akinori Sakai