Authors: Eeric Truumees; Constantine K Demetropoulos; King H Yang; Harry N Herkowitz Journal: Spine (Phila Pa 1976) Date: 2002-11-15 Impact factor: 3.468
Authors: David L Greene; Neil R Crawford; Robert H Chamberlain; Sung Chan Park; Dennis Crandall Journal: Spine J Date: 2003 Jul-Aug Impact factor: 4.166