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Zhang Yonglun Lu Sheng ankylosing spondylitis The First People's Hospital of Yunnan Province spine
01-30
!["Folding man" Zhang Yonglun: After 15 years of waiting, I can finally look up and see the sunshine[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)