1 University Malaya Medical Centre, Jalan Universiti, Lembah Pantai 50603, Kuala Lumpur, Malaysia.
2 Materno-fetal and Obstetrics Research Unit, Department "Femme-Mère-enfant", University Hospital, Rue du Bugnon 21 1011, Lausanne, Switzerland.
3 Interregional Blood Transfusion SRC, Rue du Bugnon 46 1011, Lausanne, Switzerland.
4 Transfusion Medicine Unit, Hospital Materno-Infantil Ramón Sarda, Esteban de Luca 2151, City of Buenos Aires, Argentina.
5 Obstetric Immunohematology Section, Hospital Materno-Infantil Ramón Sarda, Esteban de Luca 2151, City of Buenos Aires, Argentina.
6 Hemotherapy and Cell Therapy Department, Albert Einstein Hospital, Avenida Albert Einstein, 627- 30 andar Bloco E, São Paulo, Brazil.
7 Blood Bank, State University of Campinas, Carlos Chagas Street,480, 13083-878, São Paulo, Brazil.
8 Seattle Children's and Bloodworks Northwest, 4800 Sand Point Way NE, M/S OC.8.720, Seattle, WA, USA.
9 Children's National Hospital, 111 Michigan Ave NW, Washington, DC, USA.
10 Bloodworks Northwest, 921 Terry Avenue, Seattle, WA, 98104, USA.
11 Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, 14186, Stockholm, Sweden.
12 Center for Fetal Medicine, Karolinska University Hospital, 14186, Stockholm, Sweden.
13 Transfusion Medicine, San Camillo Forlanini Hospital, 00152, Rome, Italy.
14 Department of Experimental Medicine, Sapienza University, 00161, Rome, Italy.
15 Servizio di Emotrasfusione, Istituto di Ematologia-Fondazione Policlinico Universitario, "A. Gemelli"-IRCCS, 00168, Rome, Italy.
16 Fetal Medicine Department, CNRHP Clinical Unit, Hôpital Trousseau, 26 rue Arnold Netter, 75012, Paris, France.
17 CNRHP Clinical Unit, Hôpital Trousseau, 26 rue Arnold Netter, 75012, Paris, France.
18 University Clinic Hospital, Biomedical Diagnostic Center, University Clinic Hospital, Sabino Arana 1, 08028, Barcelona, Spain.
19 Specialist in Laboratory Medicine (EuSpLM), Leiden University Medical CenterDepartment of Clinical Chemistry and Laboratory Medicine, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
20 Sanquin Diagnostic Services and Center for Clinical Transfusion Research, Plesmanlaan 125, 1066 CX, Amsterdam, The Netherlands.
21 Leiden University Medical Center, Dept of Obstetrics and Fetal Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.