“…pharmacological detoxification, psychosocial interventions) and are delivered through a range of public and private service providers (Chalmers et al, 2016). While supporting evidence varies across modalities, there is widespread agreement that individuals who engage with treatment services are more likely to significantly reduce or cease drug use and remain drug free than those who do not undertake treatment (Corsi, Lehman, & Booth, 2009;Madras et al, 2009;Maremmani, Pani, Pacini, & Perugi, 2007;World Health Organisation, 2008).…”