Adding folic acid to diets costs four or five cents per head per year, with a payback of perhaps 120-fold.

而在食物中添加叶酸仅需每人每年四到五美分，其收益可能达120倍之多。

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Conclusion Part of annular ligament or synovial fold interposed between the capitellum and the radial head could explain the mechanism of the pulled elbow.

结论环状韧带或滑膜皱襞嵌入肱桡关节间是引起牵拉肘发病的重要因素，该机制可以解释牵拉肘的临床表现。

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Results The primary sites of these 4 cases were later discovered, 2 in the aryepiglottic fold, 1 in faucial tonsil and 1 in the skin of the head, respectively.

结果4例颈部囊性转移性鳞癌患者的原发灶均被发现，2例原发灶在杓会厌皱襞，1例在腭扁桃体，1例在头顶皮肤。

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Results The primary sites of these 4 cases were later discovered, 2 in the aryepiglottic fold, 1 in faucial tonsil and 1 in the skin of the head, respectively.

结果4例颈部囊性转移性鳞癌患者的原发灶均被发现，2例原发灶在杓会厌皱襞，1例在腭扁桃体，1例在头顶皮肤。

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