RT Journal Article SR Electronic T1 Statement on combined hormonal contraceptives containing third- or fourth-generation progestogens or cyproterone acetate, and the associated risk of thromboembolism JF Journal of Family Planning and Reproductive Health Care JO J Fam Plann Reprod Health Care FD British Medical Journal Publishing Group SP 156 OP 159 DO 10.1136/jfprhc-2013-100624 VO 39 IS 3 A1 Johannes Bitzer A1 Jean-Jacques Amy A1 Rob Beerthuizen A1 Martin Birkhäuser A1 Teresa Bombas A1 Mitchell Creinin A1 Philip D Darney A1 Lisa Ferreira Vicente A1 Kristina Gemzell-Danielsson A1 Bruno Imthurn A1 Jeffrey T Jensen A1 Andrew M Kaunitz A1 Ali Kubba A1 Medard M Lech A1 Diana Mansour A1 Gabriele Merki A1 Thomas Rabe A1 Katarina Sedlecki A1 David Serfaty A1 Jacques Seydoux A1 Lee P Shulman A1 Regine Sitruk-Ware A1 Sven O Skouby A1 Anne Szarewski A1 James Trussell A1 Carolyn Westhoff YR 2013 UL http://jfprhc.bmj.com/content/39/3/156.abstract AB