1Cuesta M A, Berends F, Veenhof A A. The invisible cholecystec- tomy: a transumbilical operation without a scar[J]. J Surg En-dosc,2008,22 (5):1211-1213.
2Wheeler A A, Matz S T, Schmidt S, et al. Laparoscopic inguinal hernia repair in children with transperitoneal division of the hernia sac and proximal purse string closure of peritoneum: our modified new approach[J]. Eur J Pediatr Surg, 2011, 21 (6): 381-385.
3Shalaby R, Ismail M, Samaha A, et al. Laparoscopic inguinal her- nia repair, experience with 874 children[J]. J Pediatr Surg, 2014, 49 (3): 460-464.
5Xu C, Xiang B, Jin S G, et al. Transumbilical two-port laparoscopic percutaneous extraperitoneal closure: a new technique for in- guinal hernia repair in children[J]. J Laparoendosc Adv Surg Tech, 2013,23 (4): 392-396.
6Li S, Li M, Wong K K, et al. Laparoscopically assisted simple su- turing obliteration (LASSO) of the internal ring using an epidural needle: a handy single-port laparoscopic herniorrhaphy in chil- dren[J]. J Pediatr Surg, 2014,49 (12): 1818-1820.
7Koivusalo A L, Korpela R,Wirtavuori K, et al. A single-blinded, randomized comparison of laparoscopic versus open hernia re- pair in children[J]. J Pediatrics, 2009,123(1): 332-337.
8Chang Y T, Wang J Y, Lee J Y, et al. A simple single-port laparo- scopic-assisted technique for completely enclosing inguinal her- nia in children[J]. J American Journal of Surgery, 2009, 198(1 ): 164-167.
2Li G, Regunathan S, Barrow CJ, Eshraghi J, Cooper R, Reis DJ.Agmatine: an endogenous clonidine-displacing substance in the brain. Science 1994;263: 966-969.
3Reis DJ, Regunathan S. Agmatine: an endogenous ligand at imidazoline receptors is a novel neurotransmitter. Ann NY Acad Sci 1999;21:88165-88180.
4Reis DJ, Regunathan S. Is agmatine a novel neurotransmitter in brain? TiPS 2000;21:187-193.
5Lind RW, Van Hoesen GW, Johson AK. An HRP study of the connections of the subfornical organ of the rat. J Comp Neurol 1982;210:265-277.