Etiology, diagnostic modalities, and short-term outcomes of hemoptysis—a retrospective cross-sectional study from a tertiary care center in Qatar - Ahmed, Shakeel; Hameed, Mansoor; Al-Tikriti, Mustafa; Elfert, Khaled; Hussein, Mousa; Albakri, Mutaz; Singh, Rajvir; Haq, Irfan Ul; Ahmad, Mushtaq; Thomas, Merlin (Journal of Thoracic Disease, 2023)