McElroy LM, Daud A, Davis AE, Lapin B, Baker T, Abecassis MM, Levitsky J, Holl JL, Ladner DP. A meta-analysis of complications following deceased donor liver transplant. Am J Surg. 2014 Oct;208(4):605-18. doi: 10.1016/j.amjsurg.2014.06.006
Espaulella J, Guyer H, Diaz-Escriu F, Mellado-Navas JA, Castells M, Pladevall-Vila M. Nutritional supplementation of elderly hip fracture patients. A randomized, double-blind, placebo-controlled trial. Age Ageing. 2000 Sep;29(5):425-31.