Authors: P J van der Maas; G van der Wal; I Haverkate; C L de Graaff; J G Kester; B D Onwuteaka-Philipsen; A van der Heide; J M Bosma; D L Willems Journal: N Engl J Med Date: 1996-11-28 Impact factor: 91.245
Authors: Mette A Neergaard; Peter Vedsted; Frede Olesen; Ineta Sokolowski; Anders B Jensen; Jens Søndergaard Journal: Br J Gen Pract Date: 2009-09 Impact factor: 5.386