I just grabbed a random program listing for urologists at NYU Langone [1]:
> Residents spend the first (intern) year of the training program completing both general surgery and urology rotations, and years two through five in urology. During year three, residents also conduct clinical research with a faculty mentor in a subspecialty of their choice.
> Residents spend the first (intern) year of the training program completing both general surgery and urology rotations, and years two through five in urology. During year three, residents also conduct clinical research with a faculty mentor in a subspecialty of their choice.
Emphasis added by me.
1 - https://med.nyu.edu/departments-institutes/urology/education...