China performs 1st pig liver transplant in human / Major medical breakthrough achieved with first pig liver transplant in human / Scientists Transplant a Gene-Edited Pig Liver Into a Person / Surgeons transplant genetically modified pig liver into Chinese patient / Scientists transplanted a pig liver into a human in a world first -- what happened next / Pig liver successfully transplanted into human for first time at Chinese military hospital / Michelle Trachtenberg had a liver transplant before her death: What to know about the surgery / More people need liver transplants as obesity increases / More people need liver transplant because of rise in obesity / 'My second chance at life after liver transplant'