1. Facultad de Ciencias de la Salud Eugenio Espejo; Universidad UTE (Cochrane Ecuador); Quito Ecuador
2. Facultad de Medicina; Universidad Francisco de Vitoria, Cochrane Madrid; Madrid Spain
3. Cátedra Rectoral de Medicina basada en la Evidencia; Universidad de Carabobo; Valencia Venezuela
4. Cochrane Hepato-Biliary Group, Copenhagen Trial Unit, Centre for Clinical Intervention Research; The Capital Region, Copenhagen University Hospital - Rigshospitalet; Copenhagen Denmark
5. Gastrounit, Medical Division; Copenhagen University Hospital Hvidovre; Hvidovre Denmark
6. Department of Therapy; IM Sechenov First Moscow State Medical University; Moscow Russian Federation
7. Department of Gastroenterology; Botkin hospital; Moscow Russian Federation
8. Hospital Italiano; Buenos Aires Argentina
9. National Research Centre in Complementary and Alternative Medicine (NAFKAM); University of Tromsø; Tromsø Norway
10. Geriatric Hospitalist Fellow, Division of General; Geriatric and Hospital Medicine Stony Brook University, Renaissance School of Medicine HSC; New York New York USA
11. Departamento de Obstetricia y Ginecología; Universidad de Carabobo; Valencia Venezuela
12. Centro Asociado Cochrane Ecuador, Centro de Investigación en Salud Pública y Epidemiología Clínica (CISPEC); Universidad UTE; Quito Ecuador