Complex sentence: China has had an organ transplantation programme since the 1960s; it is one of the largest organ transplant programmes in the world, peaking at over 13,000 transplants a year in 2004.
Split into simpler sentences: China has had an organ transplantation programme since the 1960s. It is one of the largest organ transplant programmes in the world, peaking at over 13,000 transplants a year in 2004.