We are honored U.S. News & World Report has named Boston Children’s Hospital the #1 pediatric hospital in the U.S. As we celebrate this honor, we’re reflecting on some of the greatest children’s stories ever told — stories of the patients and families whose lives touch ours and inspire us.

Two of those patients are “liver brothers” Malambo Mazoka-Tyler and Brent Groder.

Malambo and Brent are, by all standards, oceans apart.

Zambian-born Malambo is nearly two. His world, one year after a life-saving, split-liver transplant, is all about walking and talking, laughing and dancing and figuring out why the sky is blue and why cows moo — a typical toddler. …