In a 27 yr old male most common cause of a colo-vesical fistula would be:

Surgery

In a 27 yr old male most common cause of a colo-vesical fistula would be:

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?