14781-koppen

PREVALENCE OF FUNCTIONAL DEFECATION DISORDERS IN CHILDREN; A SYSTEMATIC REVIEW AND META-ANALYSIS Ilan J.N. Koppen † , Mana H. Vriesman † , Miguel Saps, Shaman Rajindrajith, Xiaoxia Shi, Faridi S. van Etten-Jamaludin, Carlo Di Lorenzo, Marc A. Benninga, Merit M. Tabbers † Both authors contributed equally Accepted for publication in Journal of Pediatrics