NORD: Pallister Hall Syndrome - Offers the synonyms, a general discussion and further resources. - http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Pallister%20Hall%20Syndrome
Yahoo! Groups : Pallister-Hall Syndrome - Details and instructions for joining, posting and reading the mail for this email support group. - http://groups.yahoo.com/group/pallister-hall_syndrome/
National Library of Medicine - Pallister-Hall syndrome, its synonyms, a summary and a list of major features. - http://www.nlm.nih.gov/mesh/jablonski/syndromes/syndrome521.html