Standard-sized needles failed to reach the buttock muscle in 23 out of 25 women whose rears were examined after what was supposed to be an intramuscular injection of a drug.

• 据路透社11月29日报道，都柏林阿德莱德与米斯医院的研究人员是在北美放射线学学会的年会上宣布上述结论的。研究对象涉及50名年龄在21岁到87岁之间的患者，其中男女各占一半。