Authors’ contributions
This study was planned by J Gao, JQ Liu, HJ Wen and XJ Wang. T The cases were evaluated by J Gao, JQ Liu, HJ Wen, H Liu, WD Hu and XJ Wang. The manuscript was written by J Gao, X Han, CX Li and XJ Wang, and approved by J Gao and XJ Wang. J Gao and XJ Wang contributed equally as senior authors. XJ Wang is responsible for the overall content as guarantor.