Shiono H, Azumi J
J Ment Defic Res. 1982 Mar;26(Pt 1):3-9. doi: 10.1111/j.1365-2788.1982.tb00123.x.
The frequencies of the Sydney line and the simian line on the palms of 694 normal Japanese subjects (500 males and 194 females), 180 with Down's syndrome (113 males and 67 females) and 107 with mental retardation (62 males and 45 females) were studied and the following conclusions were obtained: the frequency of the Sydney line tends to be lower in normal Japanese controls than in Australian and North American controls, and the simian line tends to be higher in normal Japanese controls than in Australian and North American controls. Of these two palmar creases, the simian line is more useful in identification of Down's syndrome patients than is the Sydney line in the Japanese population.
对694名正常日本受试者（500名男性和194名女性）、180名唐氏综合征患者（113名男性和67名女性）以及107名智力迟钝患者（62名男性和45名女性）手掌上悉尼线和猿线的出现频率进行了研究，得出以下结论：正常日本对照组中悉尼线的出现频率往往低于澳大利亚和北美对照组，而猿线的出现频率则往往高于澳大利亚和北美对照组。在这两种掌纹中，在日本人群中，猿线在识别唐氏综合征患者方面比悉尼线更有用。
