Infection with pneumocytis.
D006801:Humans; D007165:Immunosuppression Therapy; D007166:Immunosuppressive Agents / Q000008:administration & dosage; D011020:Pneumonia, Pneumocystis / Q000209:etiology*; D013256:Steroids / Q000008:administration & dosage
D007166:Immunosuppressive Agents; D013256:Steroids