Development and Validation of an Electronic Health Record–Based Algorithm for Identifying Patients With Long-Term Opioid Therapy: Cross-Sectional Study. - Huang, Shu; Jiao, Tianze; Guo, Serena Jingchuan; Star, Jill A; Xu, Jie; Bian, Jiang; Wilson, Debbie L; Goodin, Amie J (Journal of Medical Internet Research, 2025)