Risk factors for perioperative hidden blood loss after one-segment posterior circumferential decompression surgery on thoracic ossification of the posterior longitudinal ligament: a finding of the double-layer sign on ct

HIGHLIGHTS

• who: Huiqiang Liang from the All experimental protocols were approved by the ethics committee of The Third Hospital of Hebei Medical University and all methods were performed in accordance with the Declaration of HelsinkiEthics committee of the The Third Hospital of Hebei Medical University waived the need for informed consent as data was anonymized before the analyses. Study design and patient population have published the research work: Risk factors for perioperative hidden blood loss after one-segment posterior circumferential decompression surgery on thoracic ossification of the posterior longitudinal ligament: a finding of the double-layer sign on . . .
  

   

  

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