Poulos C, Riewpaiboon A, Stewart JF, Clemens J, Guh S, Agtini M, Anh DD, Baiqing D, Bhutta Z, Sur D, Whittington D. Cost of illness due to typhoid fever in five Asian countries. Trop Med Int Health. 2011 Mar 1;16(3):314-23.
Arana A, Cuchi T, Arellano F. Strengthening EU pharmacovigilance. European pharmaceutical contractor. European pharmaceutical contracto: EPC. 2009;44-5.