1. Department of Paediatrics and Child Health, Nelson R Mandela School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
2. Children's Lung Health, Telethon Kids Institute, School of Physiotherapy and Exercise Science, Curtin University and Centre for Child Health Research, University of Western Australia, Perth, Western Australia, Australia
3. Division of Respiratory Medicine, Translational Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
4. Division of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban
5. Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital and Medical Research Council Unit on Child and Adolescent Health, University of Cape Town, Cape Town, South Africa
6. Université de Sousse, Faculté de Médicine de Sousse, Laboratoire de Recherche Insuffisance Cardiaque (LR12AP09), Hôpital Farhat Hached, Sousse
7. Department of Physiology and Lung Function Testing (UR12 ES06), Faculty of Medicine of Sousse, University of Sousse, Tunisia
8. Laboratoire APS et Motricité, Institut National de la Jeunesse de l'Education Physique et du Sport, Université d'Abomey-Calavi, Porto-Novo, Benin
9. Department of Medical, University Hospital of Udine, Udine, Italy
10. Department of Pneumology, Phtthisiology and Allergology, Rouiba Hospital, University of Algiers, Algiers