Natsume N, Suzuki T, Kawai T
Oral Surg Oral Med Oral Pathol. 1987 Apr;63(4):421-3. doi: 10.1016/0030-4220(87)90252-0.
To determine the prevalence of cleft lip and palate (CL/P) among the Japanese, 40,304 infants born between Jan. 1, 1982, and Dec. 31, 1982, were investigated. Eighty-three infants (0.206%) were found with these abnormalities in approximately 2.06/1000 live births. Among fifty-two infants in whom it was possible to classify the types of cleft, seventeen (32.7%) had cleft lip only (CL), twenty-four (46.1%) had cleft lip and palate (CLP), and eleven (21.2%) had isolated cleft palate (CP).
为确定唇腭裂（CL/P）在日本人中的患病率，对1982年1月1日至1982年12月31日期间出生的40304名婴儿进行了调查。在大约每1000例活产中有2.06例的情况下，发现83名婴儿（0.206%）患有这些异常。在52名能够对腭裂类型进行分类的婴儿中，17名（32.7%）仅患有唇裂（CL），24名（46.1%）患有唇腭裂（CLP），11名（21.2%）患有单纯腭裂（CP）。
