Exploring Nicotine Dependence Among People Using Methamphetamine During Methadone Maintenance Treatment in Vietnam. - Truong Giang, Nguyen; Bich Diep, Nguyen; Trang, Nguyen Thu; Thanh Luan, Pham; Thi Hai Van, Hoang; Van Dung, Do; Li, Michael; Lin, Chunqing; Li, Li; Shoptaw, Steve; Minh Giang, Le (Substance Use: Research & Treatment, 2025)