Godfrey Woelk , Karen Daniels , Julie Cliff , Simon Lewin , Esperança Sevene , Benedita Fernandes , Alda Mariano , Sheillah Matinhure , Andrew D Oxman , John N Lavis and Cecilia Stålsby Lundborg
Health Research Policy and Systems 2009, 7:31doi:10.1186/1478-4505-7-31