As she leaves a 12-hour-day on the labor and delivery shift, Dr. Katie Merriam turns off her pager.
"I don't know what I'd do without it, you know? It's another limb. I always know where it is," she says, laughing.
The third-year resident in obstetrics and gynecology at the Carolinas Medical Center hospital in Charlotte, N.C., works in a medical specialty dominated by women, treating women. Merriam says she feels a special connection to her patients.