pygal
1. Pygal tumidity after intramuscular injection in 25 cases: cause and comments.
25例臀部肌注后肿块医疗纠纷诉讼案介评。
2. pygal lobe
臀叶(水螨)
3. pygal plate
臀板
4. Pizhen treatment of pygal middle cutaneous nerve entrapment syndrome
铍针治疗臀中皮神经卡压综合征