Breathing Disorders During Sleep
- Signs and symptoms of sleep apnea and Pickwickian syndrome; effects on the heart and other systems; treatment options; therapy and research.
- http://www.medhelp.org/lib/breadiso.htm

Pickwickian Syndromes
- Vanderbilt University discussion of the history of naming the syndrome, the causes, and its progression.
- http://www.mc.vanderbilt.edu/peds/pidl/endocr/pickwick.htm