APA

Grimsrud A. T., Cornell M., Egger M., Boulle A. & Myer L. (20140107). Impact of definitions of loss to follow-up (LTFU) in antiretroviral therapy program evaluation: variation in the definition can have an appreciable impact on estimated proportions of LTFU. : Journal of clinical epidemiology.

Chicago

Grimsrud Anna Thora, Cornell Morna, Egger Matthias, Boulle Andrew and Myer Landon. 20140107. Impact of definitions of loss to follow-up (LTFU) in antiretroviral therapy program evaluation: variation in the definition can have an appreciable impact on estimated proportions of LTFU. : Journal of clinical epidemiology.

Harvard

Grimsrud A. T., Cornell M., Egger M., Boulle A. and Myer L. (20140107). Impact of definitions of loss to follow-up (LTFU) in antiretroviral therapy program evaluation: variation in the definition can have an appreciable impact on estimated proportions of LTFU. : Journal of clinical epidemiology.

MLA

Grimsrud Anna Thora, Cornell Morna, Egger Matthias, Boulle Andrew and Myer Landon. Impact of definitions of loss to follow-up (LTFU) in antiretroviral therapy program evaluation: variation in the definition can have an appreciable impact on estimated proportions of LTFU. : Journal of clinical epidemiology. 20140107.