1. http://www.ncbi.nlm.nih.gov/sites/GeneTests/clinic?db=genetests gives a list of medical genetics clinics in the United States.
2. http://www.ncbi.nlm.nih.gov/sites/GeneTests/review?db=GeneTests contains reviews of genetic/molecular information for single-gene disorders and for laboratories offering testing.
3. http://clinicaltrials.gov/ gives a list of clinical trials in the United States.
4. http://www.nsgc.org/client_files/GuidetoGeneticCounseling.pdf is a lay guide to genetic counseling from the National Society of Genetic Counselors.