Decades: 180s - 190s - 200s - 210s - 220s - 230s - 240s - 250s - 260s - 270s - 280s
Years: 230 231 232 233 234 235 236 237 238 239
Events:
... Passage 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 ...