Reduction of surgical site infection using a novel intervention (ROSSINI): study protocol for a randomised controlled trial oleh Calvert Melanie J, Bradbury Jennifer M, Gheorghe Adrian, Harrison Gareth, Futaba Kaori, Youssef Haney, Mak Tony, Hawkins William, Bartlett David C, Pinkney Thomas D, Dowswell George, Magill Laura, Redman Val, Wilson Sue, Leaper David, Morton Dion G