Dangsangtong, AVongsavan, KSwasdimongkol, P2012-05-112012-05-111988-10Dangsangtong A, Vongsavan K, Swasdimongkol P. Incidence of cleft lip and/or cleft palate in hospital born during 1987. Siriraj Medical Journal, 1988 Oct; 40(10): 741-744.http://imsear.searo.who.int/handle/123456789/138328To estimate the incidence of cleft lip and/or cleft palate among 16,812 Thai babies new born during the period from January 1, 1987 to December 31, 1987 in Siriraj hospital were investigated. It was found that 36 babies (0.21%) had these abnormalities, and that the ratio of the birth of such babies was approximately one per 467 in the population. Of the 36 affected babies, 30.5% presented cleft lip (CL). 44.4% cleft lip and palate (CL/p), and 25% cleft palate (CP).enIncidenceCleft LipCleft PalateArticle