GeneTests
http://www.geneclinics.org/query?dz=sma
American College of Medical Genetics
http://www.acmg.net
National Society of Genetic Counselors
http://www.nsgc.org
Genetic Alliance
http://www.geneticalliance.org
National Human Genome Research Institute
http://www.nhgri.nih.gov
Genetics & Public Policy
http://www.dnapolicy.org
Families of Spinal Muscular Atrophy
http://www.fsma.org