1. Department of Orthopaedic Surgery, Orthopaedic Hospital Research Center, UCLA and Orthopaedic Hospital, Los Angeles, California.
2. Stem Cell Research Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania.
3. Adipose Stem Cell Center, Division of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
4. McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
5. The University of Edinburgh, Center For Cardiovascular Science, Edinburgh, Scotland, United Kingdom.