Relationship between survival and age in patients with idiopathic pulmonary fibrosis

So My Koo, Soo Taek Uh, Dong Soon Kim, Young Whan Kim, Man Pyo Chung, Choon Sik Park, Sung Hwan Jeong, Yong Bum Park, Hong Lyeol Lee, Jong Wook Shin, Eun Joo Lee, Jin Hwa Lee, Yangin Jegal, Hyun Kyung Lee, Yong Hyun Kim, Jin Woo Song, Moo Suk Park, Young Hwangbo