真是一篇神奇的论文：

Violent head trauma in China: report of 2254 cases☆

Ji-yao Jiang, MD, PhD c*, Hua Feng, MD, PhD a, Zheng Fu, MD b, Gao Guo-yi, MD, PhD c, Li Wei-ping, MD d, Liu Wei-guo, MD e, Long Lian-shen, MD f, Lu Xiao-jie, MD, PhD g, Qian Suo-kai, MD, PhD h, Xu Wei, MD, PhD i, Yang Xiao-feng, MD, PhD e, Yu Rui-tong, MD, PhD j, Zhang Sai, MD, PhD k

☆ All authors contributed equally to this work.”（所有作者对本文贡献相等）。

论文的关键在这个 ☆ 注上，其中的机妙新语丝这篇文章有解释。