Powers SW, Coffey CS, Chamberlin LA, Ecklund DJ, Klingner EA, Yankey JW, Korbee LL, Porter LL, & Hershey AD for the CHAMP InvestigatorsThe New England Journal of Medicine. 2017 October 27; 376 (2) 115-124. PubMed: PMC5226887Projects: CHAMP