In part 4, Paula Apsell talks about why it would be a struggle to make this program and why this is the last installment. The doctors also talk about what it is like going to Harvard Medical School.

Doctors' Diaries premieres April 7th & 14th at 8PM EST/PST on PBS (please check your local listings).

http://www.pbs.org/wgbh/nova/doctors/