4Amoli HA, Notash AY, Shahan dashti FJ, et al. A random- ized, prospective, double-blind, placebo-controlled trial of the effect of topical diltiazem on post-hemorrhoideetomy pain[J]. Colorectal Dis, 2009,6(11) : 897.
5Shiau JM,Su HP,Chen HS, et al. Use of a topical anesthetic- cream (EMLA) to reduce pain after hemorrhoideetomy[J].Regional Anesthesia and Pain Medicine, 2008,33 (1) : 30-35.