Authors: M Simoni; P Biavati; S Baldacci; L Carrozzi; M Pedreschi; F Di Pede; T Sapigni; G Viegi Journal: Eur J Epidemiol Date: 2001 Impact factor: 8.082
Authors: Petra E D Eysink; Gerben ter Riet; Rob C Aalberse; Wim M C van Aalderen; Carel M Roos; Jaring S van der Zee; Patrick J E Bindels Journal: Br J Gen Pract Date: 2005-02 Impact factor: 5.386