The efficacy of a blended motivational interviewing and problem solving therapy intervention to reduce substance use among patients presenting for emergency services in South Africa: A randomized controlled trial
Substance Abuse Treatment Prevention and Policy (2015) - Comment
pubmed: 26576946  doi: 10.1186/s13011-015-0042-1  issn: 1747-597x 

K. Sorsdahl, D. J. Stein, J. Corrigall, P. Cuijpers, N. Smits, T. Naledi, B. Myers