1. Kliegman RM, Nelson WE. Nelson textbook of pediatrics. Philadelphia, Pa. [u.a.]: Elsevier Saunders.##
2. Tecklin JS. Pediatric Physical Therapy. Philadelphia: Lippincott Williams & Wilkins : Wolters Kluwer. ##
3. Warnock L, Gates A, van der Schans CP. Chest physiotherapy compared to no chest physiotherapy for cystic fibrosis. Cochrane Database Syst Rev. 2013;9. ##
4. Toussaint M, De Win H, Steens M, Soudon P. Effect of intrapulmonary percussive ventilation on mucus clearance in duchenne muscular dystrophy patients: a preliminary report. Respiratory care. 2003;48(10):940-7. ##
5. Chatwin M. How to use a mechanical insufflator-exsufflator "cough assist machine". Breathe. 2008;4(4):320-9. ##
6. Miske LJ, Hickey EM, Kolb SM, Weiner DJ, Panitch HB. Use of the mechanical in-exsufflator in pediatric patients with neuromuscular disease and impaired cough. CHEST Journal. 2004;125(4):1406-12. ##
7. Homnick DN, Anderson K, Marks JH. Comparison of the flutter device to standard chest physiotherapy in hospitalized patients with cystic fibrosis: a pilot study. CHEST Journal. 1998;114(4):993-7. ##
8. Mortensen J, Falk M, Groth S, Jensen C. The effects of postural drainage and positive expiratory pressure physiotherapy on tracheobronchial clearance in cystic fibrosis. CHEST Journal. 1991;100(5):1350-7. ##
9. Abedi A, Koohestani H, Roosta Z. The short-term effect of chest physiotherapy on spirometric indices in chemical warfare victims exposed to Mustard gas. Armaghane danesh. 2008;13(3):71-81. ##
10. Crapo RO. Pulmonary-function testing. New England Journal of Medicine. 1994;331(1):25-30. ##
11. Miller S, Hall D, Clayton C, Nelson R. Chest physiotherapy in cystic fibrosis: a comparative study of autogenic drainage and the active cycle of breathing techniques with postural drainage. Thorax. 1995;50(2):165-9. ##
12. Cerny FJ. Relative effects of bronchial drainage and exercise for in-hospital care of patients with cystic fibrosis. Physical Therapy. 1989;69(8):633-9. ##
13. Hofmeyr J, Webber B, Hodson M. Evaluation of positive expiratory pressure as an adjunct to chest physiotherapy in the treatment of cystic fibrosis. Thorax. 1986;41(12):951-4. ##
14. Pryor J, Webber B, Hodson M, Batten J. Evaluation of the forced expiration technique as an adjunct to postural drainage in treatment of cystic fibrosis. Br Med J. 1979;2(6187):417-8. ##
15. Reisman JJ, Rivington-Law B, Corey M, Marcotte J, Wannamaker E, Harcourt D, et al. Role of conventional physiotherapy in cystic fibrosis. The Journal of pediatrics. 1988;113(4):632-6. ##