Authors: K C Stange; S J Zyzanski; C R Jaén; E J Callahan; R B Kelly; W R Gillanders; J C Shank; J Chao; J H Medalie; W L Miller; B F Crabtree; S A Flocke; V J Gilchrist; D M Langa; M A Goodwin Journal: J Fam Pract Date: 1998-05 Impact factor: 0.493
Authors: Sandra van Dulmen; Emmy Sluijs; Liset van Dijk; Denise de Ridder; Rob Heerdink; Jozien Bensing Journal: BMC Health Serv Res Date: 2007-04-17 Impact factor: 2.655