Dysfunctional Labor: PDF OnlyFocal Hyperplasia (Tunnel Clusters) of the Cervix UteriFLUHMANN, C. FREDERIC M.D. Author Information From the Departments of Obstetrics and Gynecology, Presbyterian Medical Center, San Francisco, Calif., and Stanford University School of Medicine, Palo Alto, Calif. Obstetrics & Gynecology 17(2):p 206-214, February 1961. Buy © 1961 The American College of Obstetricians and Gynecologists