Authors’ contributions
YouAnalysis
Conception and design of the research: Tong Liu，Lei Yin，Jian-Rong GuoAcquisition of data: Lei Yin，Yu Bai，Lai-Wei YouAnalysis and interpretation of the data: Jin-Huo Wang，Na YaoStatistical analysis: Tong Liu，Jin-Huo WangObtaining financing: Jian-Rong GuoWriting of the manuscript: Tong Liu，Yu Bai，Lai-Wei YouCritical revision of the manuscript for intellectual content: Jian-Rong Guo，Na YaoAll authors read and approved the final draft.