title: Houseofficer proficiency in urinalysis and sputum gram stains.
mesh_terms: D001431:Bacteriological Techniques; D001900:Boston; D002983:Clinical Competence; D006801:Humans; D007396:Internship and Residency; D011446:Prospective Studies; D013183:Sputum / Q000382:microbiology*; D014556:Urine / Q000032:analysis*