The Physicians Consortium has produced an outstanding report entitled "A Perspective on the Medical Implications of the Virginity Pledge among Teens"
[The Physicians Consortium, 5Jan01; 612-827-9552]. It is an excellent report on the medical hope offered through teens signing the virginity pledge.
A summary power point program of this research: http://phytemp.secure-mall.com/wp-content/uploads/2014/12/Implications_Virginity_Pledge_Teens1.ppt