1. SAMRC Centre for Health Economics and Decision Science PRICELESS SA, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
2. Global Health Consultant, Muscat, Oman
3. O'Neill Institute for National and Global Health Law, Georgetown University Law Center, Washington, USA
4. School of Human and Health Sciences, Pontificia Universidade Catolica de Sao Paulo, Sao Paulo, Brazil
5. School of Public Health and Tropical Medicine, Tulane University,
New Orleans, USA