Fig. 1From: Correspondence regarding ‘Assefa Y, et al., BMC Health Services Research. 2011; 11 (1):81 and 2014; 14(1):45’: The Positive-Deviance approach for translating evidence into practice to improve patient retention in HIV careTrend in retention in care in three negative-deviant and two positive-deviant health facilities in Ethiopia, 2005/6-2013/14Back to article page