1. Institute of Medicine, Tribhuvan University Teaching Hospital , Kathmandu, Nepal
2. Faculty of Medicine, Cairo University , Giza, Egypt
3. SR Sanjeevani Hospital , Kalyanpur, Siraha, Nepal
4. Tanta Research Team , Tanta, El-Gharbia, Egypt
5. Harvard Medical School , Boston, MA, USA
6. School of Medicine, Boston University , Boston, MA, USA
7. Faculty of Pharmacy, Mansour University , Egypt
8. Institución Universitaria Visión de las Américas , Pereira, Risaralda, Colombia
9. Grupo de Investigación Biomedicina, Faculty of Medicine, Fundación Universitaria Autónoma de las Américas , 660003 Pereira, Risaralda, Colombia
10. Master of Clinical Epidemiology and Biostatistics, Universidad Científica del Sur , Lima 4861, Peru