“…Patients with chronic cardiac, hepatic, renal, haematological malignancy, endocrine, neurological psychiatric diseases, (as determined by history, physical examination and screening investigations) pregnant and lactating mother, bronchiectasis, fibrosis, TB or significant co-morbidity that might affect lung function, (e.g. poorly controlled heart failure, atrial fibrillation or ischaemic heart disease) regular oxygen or nebulised bronchodilator therapy, respiratory infection, hospitalized within 6 weeks prior to visit and steroidal therapy were excluded from the study 17,18,19,20 . The socio-demographic parameters were assessed.…”