| Affiliation: | (1) Baylor College of Medicine, Houston, TX, USA;(2) Johns Hopkins University, Baltimore, MD, USA;(3) Georgetown University, Washington DC, USA;(4) Pontifica Catolica de Chile, Santiago, Chile;(5) University of Chile, Santiago, Chile;(6) C.A.M.E.N., Milan, Italy;(7) Javeriana, Bogota, Colombia;(8) ATLF, Lima, Peru;(9) Maryland/DC Providers, Washington DC, USA;(10) NFP Study Group, University of Düsseldorf, Düsseldorf, Germany;(11) Fédération francophone pour le P.F.N., Belgium;(12) Quidel Corporation, San Diego, CA, USA;(13) Women's Medical Center, University of Southern California, Los Angeles, CA, USA;(14) Quidel Corporation, San Diego, CA, USA |
