RT Journal Article SR Electronic T1 Sex, drugs and self-control: why chemsex is fast becoming a public health concern JF Journal of Family Planning and Reproductive Health Care JO J Fam Plann Reprod Health Care FD British Medical Journal Publishing Group SP 291 OP 294 DO 10.1136/jfprhc-2016-101576 VO 42 IS 4 A1 Alastair Macfarlane YR 2016 UL http://jfprhc.bmj.com/content/42/4/291.abstract AB