Brief report: Are changes in cannabis use frequency associated with changes in alcohol use and smoking among people with HIV (PWH) - A substitution question. - Whitney BM; Delaney JAC; Drumright LN; Nance RM; Fredericksen RJ; Chander G; Cachay ER; Fox NT; Christopoulos KA; Cropsey KL; Owens MA; Burkholder GA; et al. (Drug and alcohol dependence, 2025)