Nonexpandable tubular retractors and spinal tumors.
Northwestern University Feinberg School of Medicine, Chicago, IL; 
Zachary A
ZA
Smith
Richard G
RG
Fessler
D005260:Female; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation*; D013120:Spinal Cord Neoplasms / Q000601:surgery*