Blackfriars is one of the constituent colleges of the University of Oxford in the United Kingdom. Its status is that of a "permanent private hall", and it is located in St. Giles'. It is a centre for the study of theology, and admits both men and women.
... of kidney stones through the urethra can be painful and subsequently it can lead to urethral strictures[?]
Endoscopy of the bladder via the urethra is called ...