1. Jagiellonian University Medical College; Department of Hygiene and Dietetics, Systematic Reviews Unit; Krakow Poland
2. University Hospital; Department of Hygiene and Dietetics, Systematic Reviews Unit, Jagiellonian University Medical College, Department of Adult Psychiatry; Krakow Poland
3. Kleijnen Systematic Reviews Ltd; Unit 6, Escrick Business Park Riccall Road, Escrick York UK YO19 6FD
4. The Maria Sklodowska-Curie Institute, Oncology Center, Krakow Branch; Department of Anatomy, Jagiellonian University Medical College; Department of Surgical Oncology; ul. Garncarska 11 Krakow Poland 31-115
5. Jagiellonian University Medical College; 2nd Department of General Surgery; Jakubowskiego Street 2 Krakow Malopolska Poland 30-688
6. School for Public Health and Primary Care (CAPHRI), Maastricht University; Maastricht Netherlands 6200 MD
7. Jagiellonian University Medical College; Chair of Epidemiology and Preventive Medicine, Department of Hygiene and Dietetics; Systematic Reviews Unit; Kopernika 7 Krakow Poland 31-034