IRCT201611268554N2 IRCT 2017-04-23 Tehran University of Medical Sciences The use of two different wraps in reducing the number and size of polyps in patients with bladder exstrophy Determination of clinical and laboratory results obtained from the use of two different wraps in reducing the number and size of polyps in patients with bladder exstrophy using these plastic wraps 2016-11-06 anticipated 10 Complete https://irct.ir/trial/9045 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive. N/A Bladder exstrophy. Intervention 1: At birth, the sensitive exposed bladder mucosa should be covered with a non-adherent film (Plastic Wrap) (PVDC) to prevent infection and sticking of the bladder to diapers or clothing. Intervention 2: At birth, the sensitive exposed bladder mucosa should be covered with a non-adherent film (Plastic Wrap) (LDPE) to prevent infection and sticking of the bladder to diapers or clothing.