POCCA Study Sites
| 1 | Children's Hospital of Pittsburgh (Coordinating Center) |
8 | Doernbecher Children's Hospital |
| 2 | Children's Hospital of Atlanta Atlanta, GA |
9 | Johns Hopkins Children's Center |
| 3 | Children's Hospital of Colorado |
10 | Medical College of WIsconsin |
| 4 | Children's Hospital of Los Angeles |
11 | Nationwide Children's Hospital |
| 5 | Children's Hospital of Philadelphia |
12 | Phoenix Children's Hospital |
| 6 | Children's National |
13 | Seattle Children's Hospital |
| 7 | Cincinnati Children's Hospital Medical Center |
14 | St. Louis Children's Hospital |