1. Multi-level spondylolysis;Hersh;Bull NYU Hosp Jt Dis.,2011
2. Spondylolysis: a critical review;Standaert;Br J Sports Med.,2000
3. Multiple lumbar spondylolyses;Ravichandran;Spine (Phila Pa 1976).,1980
4. Management of multiple level spondylolysis of the lumbar spine in young males: a report of six cases;Chang;J Formos Med Assoc.,2001
5. Rehabilitation of a patient with a rare multi-level isthmic spondylolisthesis: a case report;Wong;J Can Chiropr Assoc.,2004