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Chong-Ju Kim, Hae-Seong Nam, Chang-Youl Lee, Ho-Kee Yum, Sei-Hoon Yang, Ki-Hyun Seo, Choon-Hee Son, Do-Jin Kim, Seung-Hun Jang, Man-Pyo Chung, Yong-Bum Park, Jae-Cheol Lee, Jeong-Seon Ryu. "Catamenial Hemoptysis: A Nationwide Analysis in Korea." Respiration (2010) 296-301