1. P95 Epidemiology & Pharmacovigilance, Leuven, Belgium.
2. Vaccines Medical Affairs, Pfizer UK Ltd, Tadworth, United Kingdom.
3. Pfizer Global Medical Affairs, Vaccines, Vienna, Austria.
4. Vaccine Clinical Research and Development, Pfizer Inc, Pearl River, New York, USA.
5. Vaccines Medical Development, Scientific and Clinical Affairs, Pfizer Inc, Collegeville, Pennsylvania, USA.