Founded in 1979 by Yale Uni­ver­sity move­ment spe­cial­ist Ann Cowlin, DTP has helped mil­lions of moms around the world through mean­ing­ful child­bear­ing expe­ri­ences. Since 1984, DTP has also trained teach­ers to work with moms-to-be and moms & babies. More info: click on Con­tact Us. Pre­ferred Ven­dor: Physiquality/PTPN.