human
TASK: Your task is to answer biomedical questions using the given abstract. Only output yes, no, or maybe as answer.
INPUT: ['The bladed optical access trocar is widely used and provides convenient, safe peritoneal entry. However, it has only been approved for use after insufflation. We used this device as our primary method of entry before insufflation in bariatric surgery and provide an overview of our cumulative experience. In addition, we provide a comprehensive analysis of the published data with respect to optical access as both primary and secondary methods of peritoneal access.', 'From July 30, 2001 to April 4, 2008, laparoscopic access for all bariatric surgery at a single center was achieved using the 5-12-mm optical bladed trocar without previous insufflation for 2207 cases, including 1692 laparoscopic gastric bypass procedures and 515 laparoscopic adjustable gastric band placements.', 'Four vascular injuries occurred (.18%) in our series. Three required conversion to laparotomy and vascular repair, and one was managed laparoscopically. All injuries occurred with off-midline placement. No mortalities occurred secondary to the use of the optical trocar.'] Is primary midline peritoneal access with optical trocar safe and effective in morbidly obese patients?
OUTPUT:

agent
yes
TASK: Your task is to answer biomedical questions using the given abstract. Only output yes, no, or maybe as answer.
INPUT: ['The bladed optical access trocar is widely used and provides convenient, safe peritoneal entry. However, it has only been approved for use after insufflation. We used this device as our primary method of entry before insufflation in bariatric surgery and provide an overview of our cumulative experience. In addition, we provide a comprehensive analysis of the published data with respect to optical access as both primary and secondary methods of peritoneal access.', 'From July 30, 2001 to April 4, 2008, laparoscopic access for all bariatric surgery at a single center was achieved using the 5-12-mm optical bladed trocar without previous insufflation for 2207 cases, including 1692 laparoscopic gastric bypass procedures and 515 laparoscopic adjustable gastric band placements.', 'Four vascular injuries occurred (.18%) in our series. Three required conversion to laparotomy and vascular repair, and one was managed laparoscopically. All injuries occurred with off-midline placement. No mortalities occurred secondary to the use of the optical trocar.'] Is primary midline peritoneal access with optical trocar safe and effective in morbidly obese patients?
OUTPUT:
