Table 2.

Intervention clinical centers.

Intervention center	Clinical center	Geographical region	Pediatric or adult
1	Johns Hopkins	Mid-Atlantic	Pediatric and adult
2	Hassenfeld Children’s NYUa	Northeast	Pediatric
3	Upstate Medical University	Northeast	Adult
4	Nationwide Children’s	Midwest	Pediatric
5	Grady Memorial	Southeast	Adult
6	University of Texas Southwestern	Southwest	Pediatric
7	Seattle Children’s Hospital	Northwest	Pediatric

^aNYU: New York University.