Dr. Muhammad Umer Salim is currently working as a specialist at the Department of Respiratory Medicine, Al-Noor Specialist Hospital, Mecca, Kingdom of Saudi Arabia. He completed his M.B.B.S from Dow Medical College, Karachi in 2006 and completed his training for FCPS Pulmonology at the Department of Chest Medicine, Jinnah Postgraduate Medical Centre, Karachi. He has also served as Senior Registrar at the Department of Respiratory and Critical Care, Patel Hospital, Karachi. He also has to his credit several case reports in various national and international journals.