Letters: PDF OnlyAdjustment for Age at First Birth in Etiologic Studies of Breast Cancer Involving Exposures That May Affect Age at First BirthSharpe, Colin Author Information Centre for Clinical Epidemiology and Community Studies Sir Mortimer B Davis-Jewish General Hospital Montreal, Quebec, Canada H3T 1E2 Epidemiology: January 1999 - Volume 10 - Issue 1 - p 95 Free © 1999 Lippincott Williams & Wilkins, Inc.
