- Location of the hydroxyl functions in hydroxylated metabolites of nebivolol in different animal species and human subjects as determined by on-line high-performance liquid chromatography-diode-array detection. Hendrickx, J., Bockx, M., Zwijsen, C., Borgmans, C., Mannens, G., Meuldermans, W., Heykants, J. Journal of chromatography. A. (1996)