Authors: Ament, A Baltussen, R Duru, G Rigaud-Bully, C de Graeve, D Ortqvist, A Jonsson, B Verhaegen, J Gaillat, J Christie, P Cifre, AS Vivas, D Loiseau, C Fedson, DS

Citation: A. Ament et al., Cost-effectiveness of pneumococcal vaccination of older people: A study in5 western European countries, CLIN INF D, 31(2), 2000, pp. 444-450

Authors: Michel, P Dartigues, JF Duru, G Moreau, J Salamon, R Henry, P

Citation: P. Michel et al., Incremental absenteeism due to headaches in migraine: results from the Mig-Access French national cohort, CEPHALALGIA, 19(5), 1999, pp. 503-510