1. Department of Radiology, Section of Pediatric Radiology, Max Rady College of Medicine, Rady Faculty of Health Science, University of Manitoba, GA216-820 Sherbrook St, Winnipeg, MB R3T 2N2, Canada.
2. Department of Pediatrics and Child Health, Section of Respirology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
3. Radiodiagnostic & Medical Imaging Department, King Fahd Armed Forces Hospital, Jeddah, Saudi Arabia.
4. Department of Pediatrics and Child Health, Section of Pediatric Infectious Diseases, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.