Gene Clinics http://www.geneclinics.org
Medical genetics knowledge base. NIH funded, expert-authored descriptions of inherited disorders. Covers genetic testing in diagnosis and management and genetic counseling of patients.
XLH Network http://www.xlhnetwork.org
Patient support group for XLH, a genetic condition also known as X-Linked Hypophosphatemia, X-Linked Hypophosphatemic Rickets, Familial Hypophosphatemia, Vitamin D-Resistant Rickets.