Clinical Risk Factors and Perioperative Hematological Characteristics of Early Postoperative Symptomatic Deep Vein Thrombosis in Posterior Lumbar Spinal Surgery. - Hengyan Zhang; Huiling Weng; Keyi Yu; Guixing Qiu; Zhang, Hengyan; Weng, Huiling; Yu, Keyi; Qiu, Guixing (Spine (03622436), 2021)