What Is Glycogen Storage Disease?
Internet URL
http://www.agsdus.org/html/whatisglycogenstoragedisease.html 
Sponsoring Agency
Association for Glycogen Storage Disease
Description
Persons affected by Glycogen Storage Disease (GSD) have an inherited absence or deficiency of any of the enzymes responsible for forming or releasing glycogen as it is needed by the body during exercise and/or between meals.