KLS Foundation: http://klsfoundation.org/
KLS Support UK: http://kls-support.org.uk/articles/10
Kleine-Levin-Our story: http://www.kleinelevinsyndrome.co.uk/
National Organization of Rare Diseases http://www.rarediseases.org
National Institute of Neurological Disorders and Stroke http://www.ninds.nih.gov
National Library of Medicine – National Institutes of Health – The National Library of Medicine (NLM) http://www.nlm.nih.gov