title: Pneumonias: usual and unusual etiologies.
mesh_terms: D000970:Antineoplastic Agents / Q000009:adverse effects; D006801:Humans; D007165:Immunosuppression Therapy; D009175:Mycoplasma Infections / Q000150:complications; D011014:Pneumonia / Q000209:etiology* / Q000382:microbiology; D011015:Pneumonia, Aspiration / Q000209:etiology; D011023:Pneumonia, Staphylococcal / Q000209:etiology; D011024:Pneumonia, Viral / Q000209:etiology
chemical_list: D000970:Antineoplastic Agents