1 Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 100730, Beijing, China.
2 School of Medicine, Shandong University, Jinan, Shandong, China.
3 Department of Breast Surgery, Peking Union Medical College Hospital, Beijing, China.
4 Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, China.
5 Department of Paediatrics, Xiaolan People's Hospital Affiliated to Southern Medical University, Zhongshan, Guangdong, China.
6 Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 100730, Beijing, China. mwbpumch@163.com.