H. Okubo

Intraoperative endoscopic sphincterotomy during laparoscopic cholecystectomy.

S. Osawa, Y. Hata, K. Ogasawara, 1996, Endoscopy.

LAPALOSCOPIC REMOVAL OF FOREIGN BODY IN A PATIENT ACCOMPANIED WITH VON WILLEBRAND'S DISEASE

Taku Saito, Y. Hata, H. Nakajima, 1994 .