Affiliation: | a European Vaccine Initiative, UniversitaetsKlinikum Heidelberg, Im Neuenheimer Feld 326, 69120 Heidelberg, Germany b University Children's Hospital Basel, Paediatric Infectious Diseases and Vaccinology, 4031 Basel, Switzerland c Initiative for Vaccine Research, Department Of Immunization, Vaccines & Biologicals, World Health Organization, 20 Avenue Appia, 1211-CH 27 Geneva, Switzerland d Immunization and Vaccines Development Programme, WHO Regional Office for Africa, Box 06 Djoue, Brazzaville, Congo |