Authors: J Bouma; J Broer; J Bleeker; E van Sonderen; B Meyboom-de Jong; M J DeJongste Journal: J Epidemiol Community Health Date: 1999-08 Impact factor: 3.710
Authors: J K Bleeker; M L Simoons; R A Erdman; C M Leenders; H A Kruyssen; L M Lamers; E van der Does Journal: Br J Gen Pract Date: 1995-04 Impact factor: 5.386