Estimating the impact of stimulant use on initiation of buprenorphine and extended-release naltrexone in two clinical trials and real-world populations. - Cook RR; Foot C; Arah OA; Humphreys K; Rudolph KE; Luo SX; Tsui JI; Levander XA; Korthuis PT (Addiction science & clinical practice, 2023)