Assessing antimalarial efficacy in a time of change to artemisinin-based combination therapies: the role of Médecins Sans Frontières. Tuesday 5 August 2008 Guthmann JP Checchi F van den Broek I Balkan S van Herp M Comte E Bernal O Kindermans JM Venis S Legros D Guerin PJ PLoS medicine 2008 Aug 05; 5(8); e169. doi: 10.1371/journal.pmed.0050169. Epub 2008 12 16 Open PDF Link to journal page