FDA	The United States Food and Drug Administration
GLMM	Generalized linear mixed models
GRADE	Grading of Recommendations, Assessment, Development, and Evaluation
IQR	Interquartile range
MMF/MPA	Mycophenolic acid
mTOR	Mammalian target of rapamycin
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines
PROSPERO	Prospective International Register of Systematic Reviews
RCT	Randomized controlled trial
ROBINS-I	Risk of Bias in Nonrandomized Studies of Intervention
SD	Standard deviation