Genetics Home Reference
Contains a definition of Smith-Lemli-Opitz syndrome, a developmental disorder. Includes the genes related to the disease, and further resources.
NORD - Smith Lemli Opitz Syndrome
Contains a general description of SLO syndrome, the alternative names and related organizations. From the National Organization for Rare Disorders.
The Smith-Lemli-Opitz Syndrome
Review article from the Journal of Medical Genetics features history, clinical overview, incidence, anomalies, and life expectancy.