OSLO 20040113Norwegian cross country ski -star Vibeke Skofterud showed the worlds first contraceptive plaster at an press conference in Oslo Norway , January 123, 2004. The P-plaster, named Evra, is not as reliable as the old p-pill but are useful for those who of mediacal or other reason avoid other contraceptives. Photo Heiko Junge / SCANPIX Code 20520