El-Hazmi M A, Picken J M
Am J Phys Anthropol. 1976 Mar;44(2):245-6. doi: 10.1002/ajpa.1330440206.
Middle phalangeal hair was found to be present in 71% if Saudi Arabian males. For those exhibiting this trait, the frequency of combinations of digits with hair was similar to the frequency in other populations.
研究发现,71%的沙特阿拉伯男性有中指毛发。对于表现出这一特征的人来说,有毛发的手指组合频率与其他人群相似。