Selaković D, Gavrilović Z
Med Pregl. 1989;42(1-2):22-4.
The frequency of hair whorl in the parietal area was examined in the sample of 865 schoolchildren. The simple hair whorl was more frequent in boys (62.13%) than in girls (21.41%). The double hair whorl was found only in 0.69% of the cases. The parietal hair whorl was not noticed in 58.49% of the examined children. The percentage was considerably higher in girls than in boys accounting for 77.92% and 37.13%, respectively.
在865名学童样本中检查了顶区发旋的频率。单旋在男孩中更为常见（62.13%），而在女孩中则为（21.41%）。双旋仅在0.69%的病例中发现。58.49%的受检儿童未发现顶区发旋。女孩的这一比例显著高于男孩，分别为77.92%和37.13%。
