Nathan, Meena; Jacobs, Marshall L.; Gaynor, J. William; Newburger, Jane W.; Masterson, Carolyn Dunbar; Lambert, Linda M.; Hollenbeck-Pringle, Danielle; Trachtenberg, Felicia L.; White, Owen; Anderson, Brett R.; Bell, Margaret C.; Burch, Phillip T.; Graham, Eric M.; Kaltman, Jonathan R.; Kanter, Kirk R.; Mery, Carlos M.; Pizarro, Christian; Schamberger, Marcus S.; Taylor, Michael D.; Jacobs, Jeffrey P.; Pasquali, Sara K.; Pediat Heart Network Investigators