Optimal treatment duration of glyceryl trinitrate for chronic anal fissure: results of a prospective randomized multicenter trial.
Gagliardi G, Pascariello A, Altomare DF, Arcanà F, Cafaro D, La Torre F, De Nardi P, Basso L, De Stefano I, Greco VJ, Vasapollo L, Amato A, Pulvirenti D'Urso A, Aiello D, Bove A.