P-140A GERの腹腔鏡下Nissen噴門形成術前後では胃排出能は悪化しない : ^13C-acetate呼気試験法を用いて(胃,十二指腸,小腸6, 第44回日本小児外科学会学術集会) P-140A No deterioration of gastric emptying by ^<13>C-acetate breath test before and after Nissen fundoplication for GER(Gastrointestinal 8, the 44th Annual Meeting of Japanese Society of Pediatric Surgeons)