Comparative Cost-Effectiveness Analysis of Multiple First-Line Treatments for HER2-Negative Unresectable Advanced or Recurrent Gastric Cancer in Japan. - Morimoto, Kosuke; Moriwaki, Kensuke; Nishikawa, Yoshitaka; Maeda, Tomomi; Toyama, Mayumi; Agatsuma, Nobukazu; Kojima, Satomi; Utsumi, Takahiro; Takahashi, Yoshimitsu; Shimozuma, Kojiro; Nakayama, Takeo (PharmacoEconomics - Open, 2026)