KARACHI, Aug 23: A noted colorectal surgeon from Indore, India, Dr Ashok Ladha, will conduct a two-day medical workshop on surgical skills at the Jinnah Postgraduate Medical Centre on Aug 25 and 26, said a senior official of the hospital. The Indian expert is scheduled to deliver lectures on surgery for piles, fistula and fissure for junior surgeons and postgraduates, added the official.