PrilocaineOintmentsAnesthetics, LocalAnesthesia, LocalAnesthetics, CombinedTetracainePhlebotomyEthyl ChlorideCatheterization, PeripheralDental ProphylaxisAdministration, TopicalDrug CombinationsWartsPainAnesthesia, DentalAdministration, CutaneousAnalgesiaDouble-Blind MethodGenital Diseases, MalePain MeasurementElectrocoagulationGelsMouth MucosaLithotripsyNitrous OxideAnalgesics, Non-NarcoticInjections, IntramuscularCross-Over Studies