All about Arthritis: Ask the Expert
   Allows users to ask questions about arthritis and its treatments to a panel of orthopedic surgeons and rheumatologists from around the country.
   http://www.allaboutarthritis.com/AllAboutArthritis/layoutTemplates/html/en/asktheexperts/asktheexperts.jsp

Ask The Doctor
   Previous answers and easy access to personal advice and information at your request from Dr. Suneel Sharman.
   http://www.askthedoctor.ca

Ask a Safety Engineer
   Provides free safety advice and answers questions on safety, hazard, and accident causation and prevention.
   http://www.askasafetyengineer.com

Doctors Lounge - Ask a Doctor
   Receive free medical consultation and advice from a panel of medical doctors, nurses, or experts in all medical specialties.
   http://www.doctorslounge.com/ask.htm

Drug and Alcohol Testing Q&A
   Physician-moderated discussion board for the exchange of technical information and expertise in interpreting test results.
   http://www.occ-doc.net/MRO_information.htm

Global Hospital - Brain Tumor Treatment
   Provides a form for requesting second opinions, as well as details of the specialists answering questions.
   http://braintumour.globalhospital.com/

InteliHealth: Ask The Expert
   Harvard Medical School and University of Pennsylvania Dental School specialists answer visitors' health-related questions.
   http://www.intelihealth.com/IH/ihtIH/WSIHW000/24479/4464.html

Parkinson Disease Foundation - Ask The Expert
   Features a categorized FAQ archive, and offers a form for new enquiries, as well as general information and online donations.
   http://www.pdf.org/Ask/

Yahoo! Health - Ask the Expert
   Experts answer readers' questions on a variety of health topics.
   http://health.yahoo.com/health/ate/