1. General Hospital K.A.T.; Medical Library; Athens; Greece
2. Academy of Athens; Biomedical Research Foundation; Athens; Greece
3. Istituto Nazionale Tumori Regina Elena; Biblioteca Digitale Riccardo Maceratiniee e Biblioteca del Paziente; Rome; Italy
4. Istituto Superiore di Sanità; Rome; Italy
5. Regional Health Ministry; Andalusian Health e-Library; Seville; Andalusia; Spain
6. Faculty of Pharmacy; University of Lisbon; and APDIS-Portuguese Association of Health Documentation and Information; Lisbon; Portugal