1. Velopharyngeal dysfunction: recommendations for use of nomenclature;Loney;Cleft Palate J,1987
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4. Evaluation and management of velopharyngeal dysfunction: a speech pathologist's viewpoint;D'Antonio;Probl Plastic Reconstr Surg,1992
5. Perceptual evaluation of velopharyngeal competency;Philips;Ann Otol Rhinol Laryngol Suppl,1980