Argon plasma coagulation for successful treatment of early gastric cancer with intramucosal invasion. - Sagawa,T.; Takayama,T.; Oku,T.; Hayashi,T.; Ota,H.; Okamoto,T.; Muramatsu,H.; Katsuki,S.; Sato,Y.; Kato,J.; Niitsu,Y. (Gut, 2003)