Sylvia Chalmers was a Doctor in the small town, Harmony responsible for treating Private Officer First Class Thomas Dorn as she was the only doctor for 40 miles at the time and as such, she still saw some of the older patients who didn't trust her thirty-seven year old rival, Doctor Bernger who was also buying out her practice. Apparently, Dorn came into the doctor's office one day instead of an examination room because the Doctor's Surgery Chalmers worked at only had one and the Thomas twins were in there at the time with the measles.