Acute changes in anorectal manometry induced for proximal and distal anal sphincterotomy in piglets - Mehl, J. B.; Vicente, Yvone Avalloni M. V. de Andrade; Dantas, Roberto Oliveira; Júnior, J. E.; Cambrea, Carlos Roberto; Rocha, M. C. (International Symposium on Paediatric Surgical Research, 2007)