title: Authors' reply.
authors.affiliation: Department of Pulmonology, Military Hospital, Rawalpindi.
authors.forename: Arshad
authors.initials: A
authors.lastname: Naseem
mesh_terms: D001249:Asthma / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D009504:Neutrophils / Q000276:immunology*; D013183:Sputum / Q000166:cytology*