Urine antibiotic activity in patients presenting to hospitals in Laos: implications for worsening antibiotic resistance. by Khennavong, M, Davone, V, Vongsouvath, M, Phetsouvanh, R, Silisouk, J, Rattana, O, Mayxay, M, Castonguay-Vanier, J, Moore, C, Strobel, M, Newton, P