Authors: B D Frijling; T H Spies; C M Lobo; M E Hulscher; B B van Drenth; J C Braspenning; A Prins; J C van der Wouden; R P Grol Journal: Br J Gen Pract Date: 2001-01 Impact factor: 5.386
Authors: Jako S Burgers; Richard P T M Grol; Joost O M Zaat; Teun H Spies; Akke K van der Bij; Henk G A Mokkink Journal: Br J Gen Pract Date: 2003-01 Impact factor: 5.386