- National Institutes of Health / National Institute for Neurological Disorders and Stroke
- Medline Plus
- American Society for Surgery of the Hand
- American Academy of Orthopedic Surgeons
- Johns Hopkins Medicine / Kennedy-Krieger Institute
- http://nerve.wustl.edu/physician_mackinnon.php?np=our_physicians
- Boston Children's Hospital
- Shriners Hospitals for Children
- Miami Children's Hospital
- Seattle Children's Hospital Brachial Plexus Clinic
- Cincinnati Children's Hospital Brachial Plexus Center
- Hospital for Sick Children - Toronto, CA