www.abta.org
American Brain Tumor Association

www.anausa.org
Acoustic Neuroma Association.

www.btfcgainc.org
Brain Tumor Foundation For Children, Inc.

www.efa.org/aboutus
Epilepsy Foundation.

www.painfoundation.org/page_patinfo.asp
American Pain Foundation

www.pituitary.com
Pituitary Network Association (PNA)

www.medscape.com
A site with a variety of information in various fields of medicine

www.medinfo.ru
A site, useful for professionals and for patients.