1. Walter Sisulu University, University of Fort Hare, University of the Witwatersrand, Eastern Cape Department of Health; East London South Africa
2. 1st Floor Education Centre, Royal United Hospital; Cochrane Gynaecological, Neuro-oncology and Orphan Cancer Group; Combe Park Bath UK BA1 3NG
3. Centro de Estudos de Saúde Baseada em Evidências e Avaliação Tecnológica em Saúde; Cochrane Brazil; R. Borges Lagoa, 564 cj 63 Vila Clementino São Paulo São Paulo Brazil 04038-000