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 care.

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 care.