Authors: Lisa J Ware; Karen Charlton; Ruan Kruger; Yolandi Breet; Johannes van Rooyen; Hugo Huisman; Shani Botha; Aletta S Uys; Kirsten L Rennie; Nirmala Naidoo; Paul Kowal; Aletta E Schutte Journal: Drug Alcohol Depend Date: 2018-12-21 Impact factor: 4.492