Simultaneous determination of the azoles voriconazole, posaconazole, isavuconazole, itraconazole and its metabolite hydroxy-itraconazole in human plasma by reversed phase ultra-performance liquid chromatography with ultraviolet detection - Verweij-van Wissen, C.P.W.G.M.; Burger, D.M.; Verweij, P.E.; Aarnoutse, R.E.; Brüggemann, R.J.M. (Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences, 2012)