European Journal of Clinical Pharmacology Volume 64 Number 1 January 2008 DEBATE ARTICLE The conscientious judgement of a DSMB - statistical stopping rules re-examined K, Hedenmalm ■ H. Melander ■' G. Aivan CONICAL TRIAL Endocannabinoids in platelets of chronic migraine patients and medication-overuse headache patients: relation with serotonin levels C, Rossi ■ LA. Pini ■ M.L. Cupini ■ P. Calabresi • P. Sarchielli 69 SHORT COMMUNICATIONS ■ 1 Increased use of second generation antipsychotic drugs in primary care: potential relevance for hospitalizations in schizophrenia patients M.C Caceres ■ E.M. Penas-LLedd ■ A. de la Rubia ■ A. PHARMACOGENETICS CYP2C9 genotypes and the quality of anticoagulation control with warfarin therapy among Brazilian patients LLerena 73 M.V. Lima ■ G.S. Ribeiro ■ E.T. Mesquita ■ P.R. Victer ■ R. Effect of kolanut on the pharmacokinetics of the antimalarial drug halofantrine Vianna-Jorge 9 Y.T. Kolade ■ C.P. Babalola ■ A.A. Olaniyi ■ G.K.E. Scriba PHARMACOKINETJCS AND DISPOSITION Comparison of carbamazeptne and oxcarbazepine effects on aminothiol levels Effects of gender and moderate smoking on the pharmacokinetics and effects of the CYP1A2 substrate tizanidine J.T. Backman ■ M.T. Schroder ■ P.J. Neuvonen 17 Effect of voriconazole and fluconazole on the pharmacokinetics of intravenous fentanyl S. Badiou ■ H. Breton ■ H. Peyriere ■ V. Charasson ■ A. Crespel ■ P. Gelisse ■ J.-P. Cristol ■ D. Hillaire-Buys 83 Greater impact of oral fluconazole on drug interaction with intravenous calcineurin inhibitors as compared with intravenous fluconazole A. Mihara - T. Mori ■ Y. Aisa ■ R. Yamazaki ■ 0. Iketani ■ Y. Tanigawara ■ Y. Ikeda ■ S. Okamoto T.I. Saari ■ K. Laine ■ M. Neuvonen ■ P.J. Neuvonen ■ K.T. Olkkola 77 89 25 LETTER TO THE EDITORS The effects of CYP3A4 inhibition on erlotinib pharmacokinetics: computer-based simulation (SitriCYP™) predicts in vivo metabolic inhibition Tofisopam inhibits the pharmacokinetics of CYP3A4 substrate midazolam A. Rakhit ■ M.P. Pantze ■ S. Fettner ■ H.M. Jones ■ J.- M. Toth ■ 5. Drabant ■ B. Varga ■ G. Vegso ■ A. Cseh ■ I. E, Charoin ■ M. Riek ■ B.L. Lum ■ M. Hamilton Szentpeteri ■ I. Klebovich 31 93 Mutual pharmacokinetic interactions between steady-state bosentan and sildenafil G. Burgess ■ H. Hoogkamer ■ L. Collings ■ J. Dingemanse 43 PHARMACOEPIDEMIOLOGY AND PRESCRIPTION Further articles can be found at www.springerlink.com Indexed Factors associated with changes in antidepressant use in a community-dwelfing elderly cohort: the Three-City Study in/abstracted by Current Contents and Index Medicus. A. Soudry ■ C. Dufouil ■ K. Ritchie ■ J.-F. Dartigues ■ C. Tzourio ■ A. Alperovitch 51 Development of NSAIDs prescription indicators based on health outcomes R. Fernandez Urrusuno ■ M.P. Gonzalez ■ M.A. Torrecilla Rojas 61 Instructions for Authors for EurJClin Pharmacol are available at www.springer.com/00228.