1. Research and Publications, Fatima Jinnah Medical University, Lahore, Pakistan
2. Research, King Edward Medical University, Lahore, Pakistan
3. Research, Services Institute of Medical Sciences, Lahore, Pakistan
4. Internal Medicine, University of Texas Health Science Centers, McGovern Medical School, Houston, Texas, USA
5. Pediatrics and Child Health, The Aga Khan University, Karachi, Pakistan
6. Allergy and Pulmonology, Universidad Espíritu Santo, Ecuador