Which of the following is the most troublesome source of bleeding during a radical retropubic prostatectomy?

Surgery

Which of the following is the most troublesome source of bleeding during a radical retropubic prostatectomy?

A tender swelling in submandibular triangle is mostly likely diagnosed as

In transfacial proportions, the face Is divided into how many segments:

Specific for Ankylosing spondylitis is true?