ST. LOUIS, Missouri, Feb. 15 -- The Washington University School of Medicine issued the following news release: * * * WashU Medicine launches center for rare diseases New effort unites vast rare disease network to advance research, therapies By Marta Wegorzewska WashU Medicine researcher Patricia Dickson, MD, studies rare genetic diseases called lysosomal storage disorders. Dickson, director of WashU Medicine's Undiagnosed Diseases Network (UDN) Diagnostic Center of Excellence, will serve a  more