Feasibility and Acceptability of a Positive Psychological Intervention for Patients With Metastatic Breast Cancer: Pre-Post Pilot Study. - Conley CC; Addington EL; Velazquez-Sosa M; Mossman B; Glenn L; Drakeford S; Guerra R; Isaacs C; Chitalia A; Gallagher C; O'Neill SC; Moskowitz JT (JMIR formative research, 2025)