TY - RPRT TI - Lumbar discography in normal subjects. A controlled, prospective study. AU - T R Walsh AU - J N Weinstein AU - K F Spratt AU - T R Lehmann AU - C Aprill AU - H Sayre PY - 1990 UR - https://pubmed.ncbi.nlm.nih.gov/2384508/ ID - 2384508 ER -