“…The subject population was comprised of 28 CLP and 50 CP children who had undergone only primary' palatal repair (a Veau-Wardill-Kilncr operation or a Cronin modification) [6] and of 2 CLP and 5 CP chil dren who had undergone secondary surgery (a modi fied Honig velopharyngeal flap) [7], Patients with a syndromic cleft, intelligence deficiency, a specific lan guage disorder due to intelligence deficiency, cognitive disabilities or neuromotor dysfunctions, persistent hearing threshold below 26 dB in the better ear, poor cooperation, or an uncovered residual hard palatal fis tula or recurrent palatal cleft during speech follow-up were excluded. These factors are considered as con founding factors, since they are likely to affect the speech results and bias the conclusions [8],…”