Authors: Willemsen, JJ Ross, HA Wolthers, BG Sweep, CGJ Kema, IP

Citation: Jj. Willemsen et al., Evaluation of specific high-performance liquid-chromatographic determinations of urinary metanephrine and normetanephrine by comparison with isotope dilution mass spectrometry - (vol 38, pg 356, 2001), ANN CLIN BI, 38, 2001, pp. 722-730

Authors: Mehagnoul-Schipper, DJ Lenders, JWM Willemsen, JJ Hopman, WPM

Citation: Dj. Mehagnoul-schipper et al., Sympathoadrenal activation and the dumping syndrome after gastric surgery, CLIN AUTON, 10(5), 2000, pp. 301-308

Authors: Willemsen, JJ

Citation: Jj. Willemsen, A ten-dollar stirring device for the microscale laboratory, J CHEM EDUC, 77(11), 2000, pp. 1476-1476