title: The challenge of the 1990s.
authors.affiliation: Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis 46202.
authors.forename: C E
authors.initials: CE
authors.lastname: Ehrlich
mesh_terms: D000328:Adult; D006176:Gynecology / Q000193:education / Q000639:trends; D006801:Humans; D008495:Medical Oncology / Q000193:education / Q000639:trends; D008875:Middle Aged; D000078329:Workforce