TY - RPRT TI - Interlaboratory and intralaboratory variability in pulmonary function testing. A 13-year study using a normal biologic control. AU - K M Kangalee AU - R T Abboud PY - 1992 DO - 10.1378/chest.101.1.88 UR - https://pubmed.ncbi.nlm.nih.gov/1729118/ ID - 1729118 ER -