Amna Jawaid1, Khubaib Arif1, Nick Brown2, Zehra Fadoo3. 1. Department of Emergency Medicine, Aga Khan University Hospital, Karachi 74800, Pakistan. 2. Visiting faculty, Salisbury District Hospital, Salisbury, United Kingdom. 3. Department of Oncology and Pediatrics, Aga Khan University Hospital, Karachi 74800, Pakistan.