Effect of chlorhexidine bathing every other day on prevention of hospital-acquired infections in the surgical ICU: a single-center, randomized controlled trial by Swan, J, Ashton, C, Bui, L, Pham, V, Shirkey, B, Blackshear, J, Bersamin, J, Pomer, R, Johnson, M, Magtoto, A, Butler, M, Tran, S, Sanchez, L, Patel, J, Ochoa, R, Hai, S, Denison, K, Graviss, E, Wray, N