External quality assessment of sputum smear microscopy: a matter of careful technique and organisation.
Van Deun
Armand
A
D019411:Clinical Laboratory Techniques / Q000592:standards*; D006801:Humans; D008171:Lung Diseases / Q000382:microbiology / Q000473:pathology*; D008853:Microscopy / Q000592:standards*; D011785:Quality Assurance, Health Care / Q000458:organization & administration* / Q000592:standards*; D013183:Sputum / Q000166:cytology* / Q000382:microbiology