substance_photos_supplementary_doc_(2) - Mixed-methods and Repeated Measures in Substance Use Research: Implications for Informant Accuracy

substance_photos_supplementary_doc_(2) for Mixed-methods and Repeated Measures in Substance Use Research: Implications for Informant Accuracy by Caitlyn D. Placek, Vijaya Srinivas, Poornima Jayakrishna and Purnima Madhivanan in Field Methods