This issue consists of 12 articles contributed by numerous authors affiliated with more than 54 institutions/universities from 9 countries including: USA (Brigham and Women’s Hospital, Boston; Michigan State University, East Lansing; University of Florida, Jacksonville; University of Nevada, Las Vegas; New Mexico State University, Las Cruces; Washington University, St. Louis), Armenia (Yerevan State Medical University), Ghana (Nurses’ and Midwives’ Training College, Tamale; University for Development Studies, Tamale), India (All India Institute of Medical Sciences, Gorakhpur, Uttar Pradesh; SMMCNMT Islamic University of Science and Technology, Awantipora Pulwama Kashmir; Postgraduate Institute of Medical Education and Research, Chandigarh; Global Center for Evidence Synthesis, Chandigarh; Evidence Synthesis Lab, Kolkata; Dr. D. Y. Patil Medical College, Hospital and Research Centre, Pune; National Centre for Disease Control, Delhi; SRM Medical College Hospital and Research Centre, Chengalpattu; Amrita Institute of Medical Sciences, Kochi; Kasturba Medical College, Manipal Academy of Higher Education, Manipal; Diacare-Diabetes Care and Hormone Clinic, Ahmedabad; KMCH Institute of Health Sciences & Research, Coimbatore; Medical College and Hospital, West Bengal University of Health Sciences, Kolkata), Pakistan (Health Services Academy, Islamabad; The University of Haripur, Haripur), Peru (Red de Eficacia Clínicay Sanitaria (REDECS), Lima), Bangladesh (Daffodil International University, Dhaka), Saudi Arabia (Johns Hopkins Aramco Healthcare, Dhahran; Alfaisal University, Riyadh), Qatar (Hamad Medical Corporation, Doha).