1. Nationwide Children’s Hospital, Columbus, Ohio, USA
2. University of Copenhagen Hvidovre Hospital, Hvidovre, Denmark
3. Hennepin County Medical Center, Minneapolis, Minnesota, USA
4. Indiana University School of Medicine, Indianapolis, Indiana, USA
5. Laboratory Alliance of Central New York, Liverpool, New York, USA
6. TriCore Reference Laboratories, Albuquerque, New Mexico, USA
7. STAT-DX Life (now a Qiagen company), Barcelona, Spain