<prompt> Mutsara 1: Muna 1999, Shelstad akagadzira dzidziso ye endoscopy yakamonyoroka naRobert Kottwitz. Muna 2008 - 9 akapedza basa rake pakuongorora endoscopy. Mutsara 2: Muna 1999, Shelstad, pamwe chete naRobert Kottwitz, vakagadzira dzidziso ye endoscopy yakamonyoroka uye vakapedza basa re endoscopy yakadzikama muna 2008 - 9. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?  <response>: Hungu 