90 percent of genital warts 90 percent of genital warts 90 percent of genital warts 90 percent of genital warts protects against four strains 90 percent of genital warts 90 percent of genital warts 90 percent of genital warts 90 percent of genital warts 90 percent of genital warts 90 percent of genital warts 90 percent of genital warts