1. Cochrane; Editorial & Methods Department; St Albans House, 57 - 59 Haymarket London UK SW1Y 4QX
2. Cochrane; Cochrane Response; St Albans House 57-59 Haymarket London UK SW1Y 4QX
3. Chevron Corporation; 2 Chevron Drive Lekki Lagos Nigeria
4. University of Liverpool; Institute of Infection and Global Health, Faculty of Health and Life Sciences; Liverpool UK L69 7BE