Fig. 2From: Mention of ethical review and informed consent in the reports of research undertaken during the armed conflict in Darfur (2004–2012): a systematic reviewSources of ethical approval as mentioned in the studies included in the systematic review (N = 68). Out of 68 eligible studies included in this review, only 9 (13%) mentioned that they were ethically approved. Three studies (4%) were approved by a university ethics committee, three studies (4%) were approved an NGO’s ethics committee, while only one study mentioned to be approved by the national research ethics committee (NREC) of SudanBack to article page