- Correspondence to Dr P Calain, Research Unit on Humanitarian Stakes and Practices (UREPH), Médecins Sans Frontières, Rue de Lausanne 78, 1211 Geneva 21, Switzerland;
- Received 18 February 2016
- Revised 15 July 2016
- Accepted 7 August 2016
- Published online 29 August 2016.
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