Interviews were administered face-to-face in respondents’ homes after obtaining informed consent using procedures approved by local Institutional Review Boards. The interview schedule was developed in English and translated into other languages using a standardized WHO translation, back-translation, and harmonization protocol (Harkness et al. 2008). Bilingual supervisors were trained and supervised by the WMH Data Collection Coordination Centre to guarantee cross-national consistency in field procedures (Harkness et al. 2008).
