Authors: G A Stanczuk; E N Sibanda; C Perrey; M Chirara; V Pravica; I V Hutchinson; S A Tswana Journal: Int J Cancer Date: 2001-12-15 Impact factor: 7.396
Authors: T S Shields; R T Falk; R Herrero; M Schiffman; N S Weiss; C Bratti; A C Rodriguez; M E Sherman; R D Burk; A Hildesheim Journal: Br J Cancer Date: 2004-01-12 Impact factor: 7.640