Your assistance in completing this survey
is very valuable to the future of our research. To show our gratitude,
after completing the survey, you will be invited to select a charity
from our list and we will make an anonymous contribution in your honor.
In addition, you will become eligible to enter a lottery in which a
$100 gift check will be awarded to one person out of every 1,000 people
who choose to leave an email address. (Addresses are separated from
survey responses so that all responses remain confidential.)