Authors: L J Swinnen; M R Costanzo-Nordin; S G Fisher; E J O'Sullivan; M R Johnson; A L Heroux; G J Dizikes; R Pifarre; R I Fisher Journal: N Engl J Med Date: 1990-12-20 Impact factor: 91.245
Authors: Ronald P Lefebvre; David H Peterson; Mitchell Haas; Richard G Gillette; Charles W Novak; Janet Tapper; John P Muench Journal: J Chiropr Educ Date: 2011