題名：Nationwide survey in Japan of the causative diseases of bloody sputum and hemoptysis in departments of respiratory medicine at university hospitals and core hospitals.
著者：Fujii H, Hara Y*, Obase Y, Haranaga S, Takahashi H, Shinkai M, Terada J, Ikari J, Katsura H, Yamamoto K, Suzuki T, Tagaya E, Mukae H, Kanoko T.
掲載ジャーナル：Respir Invest　2024;62(3):395-401　doi: 10.1016/j.resinv.2024.02.003.?Epub 2024 Mar 13.