{"certainAgreement":{"piSponsorEmployee":false,"restrictiveAgreement":false},"limitationsAndCaveats":{"description":"The study was an effectiveness trial so external vs. internal validity was emphasized. Many participants were lost to follow-up."},"pointOfContact":{"email":"schnoll@mail.med.upenn.edu","organization":"University of Pennsylvania","phone":"215-746-7143","title":"Robert Schnoll"}}