1. Department of Family Medicine, Evidence Based Health Care Program, Faculty of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile
2. Cochrane Chile; Pontificia Universidad Católica de Chile; Santiago Chile
3. Health Policy and Systems Research Unit, Evidence Based Health Care Program, Faculty of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile
4. Department of Family Medicine, Faculty of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile