n     The University of Sydney Medical Society

n     The Neurosurgical Society of Australasia

n     The North American Spine Society

n     Congress of Neurological Surgeons

n     Joint Section AANS / CNS Spine & Peripheral Nerve

n     Joint Section AANS / CNS Trauma and Critical Care

n     The Mayo Alumni Society

n     Royal Australasian College of Surgeons

n     Spine Trauma Study Group

n     American Board of Disability Analysts

n     Western Physicians Alliance

n     American Medical Association

n     Washoe County Medical Society

n     Nevada State Medical Association

n     AO North America