Minnis AM, Atujuna M, Browne EN, Ndwayana S, Hartmann M, Sindelo S, Ngcwayi N, Boeri M, Mansfield C, Bekker L-G, Montgomery ET. Preferences for long‐acting Pre‐Exposure Prophylaxis (PrEP) for HIV prevention among South African youth: results of a discrete choice experiment. J Int AIDS Soc. 2020 Jun 16;23:e25528. doi: 10.1002/jia2.25528
Reed (Earnshaw) SJ, Reed JH. The use of statistical quality control charts in monitoring interviewers. Proceedings of the Survey Research Methods Section, American Statistical Association. 1997 Jan;893-8.