1 Department of Chest Diseases, Faculty of Medicine, Alexandria University, Alexandria, Egypt; Division of Infection, Immunity, and Respiratory Medicine, The University of Manchester, and Manchester University NHS Foundation Trust, Manchester, England. Electronic address: dr.amanyelbehairy@yahoo.com.
2 Department of Chest Diseases, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
3 Department of Cardiology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
4 Department of Biomedical Informatics and Medical Statistics, Medical Research Institute, Alexandria University, Alexandria, Egypt.
5 Division of Infection, Immunity, and Respiratory Medicine, The University of Manchester, and Manchester University NHS Foundation Trust, Manchester, England.
6 Department of Medicine, Respiratory Investigation Unit, Queen's University, and Kingston Health Sciences Centre, Kingston, ON, Canada.