Hypercalcaemia
Williams Syndrome Foundation Ltd
161 High Street, Tonbridge, Kent TN9 1BX
Tel: 01732 365152 (Helpline)
Fax: 01732 360 178
E-mail: john.nelson@wsfoundation.btinternet.com
Web address: www.williams(highton)syndrome.org.uk
Runs a parents' association to put parents in touch. Holds meetings for children, parents and doctors and provides information and advice.