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1. DoH seems to have underestimated incidence of venous thromboembolism in users of combined oral contraceptives.

Authors: R A Lawrenson; A Whalley; E Simpson; R D Farmer
Journal: BMJ Date: 1999-08-07

Authors: H Jick; L A García Rodríguez; S Pérez-Gutthann
Journal: Lancet Date: 1998-11-28 Impact factor: 79.321

Authors: R M Herings; J Urquhart; H G Leufkens
Journal: Lancet Date: 1999-07-10 Impact factor: 79.321

Authors: R D Farmer; R A Lawrenson; C R Thompson; J G Kennedy; I R Hambleton
Journal: Lancet Date: 1997-01-11 Impact factor: 79.321

Authors: N R Poulter; C L Chang; M Marmot; T M Farley; O Meirik
Journal: Lancet Date: 1997-03-08 Impact factor: 79.321

Authors: K W Bloemenkamp; F R Rosendaal; F M Helmerhorst; H R Büller; J P Vandenbroucke
Journal: Lancet Date: 1995-12-16 Impact factor: 79.321

Authors: H Jick; S S Jick; V Gurewich; M W Myers; C Vasilakis
Journal: Lancet Date: 1995-12-16 Impact factor: 79.321

7 in total