Fistula was less frequent in groups II and III than I ( 10.7 % group I vs 3.6 % group II vs 3.6 % group III : p = 0.033 ) , The length of postoperative stay had a trend to be better with high dose of arginine received ( 31.9 17.2 days in group I vs 27.8 15.2 days in group II vs 24.8 18.3 days in group III : p = 0.034 ) .