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Van der Graaf PH, Van Schaick EA, Visser SA, De Greef HJ, Ijzerman AP, Danhof M.Van der Graaf PH, et al. Among authors: visser sa.J Pharmacol Exp Ther. 1999 Aug;290(2):702-9.J Pharmacol Exp Ther. 1999.PMID: 10411581