Efficacy of a Single-Agent Ts1 (Tegafur, Gimeracil, and Oteracil) in Recurrent Gastric Cancer after Progression from Previous Oxaliplatin, Irinotecan, and Anti-Her2 Targeted Therapy: A Case Report - Zapanta, John Bryle; Gorospe, Charity (Asian Pacific Journal of Cancer Care, 2025)