Wingo P A, Landis S, Ries L A
Surveillance Research, Department of Epidemiology and Surveillance Research, American Cancer Society, Atlanta, Georgia, USA.
Cancer. 1997 Nov 1;80(9):1810-3. doi: 10.1002/(sici)1097-0142(19971101)80:9<1810::aid-cncr19>3.0.co;2-8.