1.
The Dutch cohort of sildenafil users: baseline characteristics
2.
Migraine prophylactic medication usage patterns in The Netherlands
Patterns of ergotamine and sumatriptan use in the Netherlands from 1991 to 1997
Incidence and determinants of migraine prophylactic medication in the Netherlands
Langdurig gebruik van antidepressiva in Nederland in 1991-2001: prevalentie, incidentie en risico-indicatoren*