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APA Citation
Placek, C. D., Srinivas, V., Jayakrishna, P., & Madhivanan, P. (2019). mixed-methods and Repeated Measures in Substance Use Research: Implications for Informant Accuracy. Field methods, 31(4), 344–358. http://access.bl.uk/ark:/81055/vdc_100088309747.0x00000c