Prospective, Multicenter Clinical Study of Prolonged-release Tacrolimus in Stable Pediatric Liver Transplant Recipients

"Immediate-release tacrolimus for at least 3 months after liver transplantation, and then convert to tacrolimus sustained-release capsules at a ratio of 1:1 to 1:1.2; Take the medicine once a day on an empty stomach in the morning.~(The specific medication plan is decided by the clinician according to the actual situation)"