Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Oxford OX3 9DU, Oxford, United Kingdom

The Rosie Hospital, Robinson Way, Cambridge CB2 2SW, Cambridge, England

The Institute of Occupational and Environmental Medicine, University of Birmingham, Edgbaston, Birmingham, B15 2TT, Birmingham, United Kingdom

School of Medicine, The University of Manchester, Oxford Road, Manchester M13 9PT, Manchester, United Kingdom

School of Medicine, The University of Manchester, Oxford Road, Manchester M13 9PT, Manchester, United Kingdom

School of Health Sciences, Building 45, University of Southampton, Highfield Campus, SO17 1BJ, Southampton, United KIngdom

Mekelweg 2, 2628 CD, Delft, Delft, Netherland

Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, Cambridge, England

University of Cambridge, Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 2XZ, Cambridge, England

P.O. Box 7057 , 1007 MB, Amsterdam, Amsterdam, Netherlands

P.O. Box 513 , 5600 MB, Eindhoven, Eindhoven, Netherland

P.O. Box 90153 , 5000 LE, Tilburg, Netherland

Nuffield Laboratory of Ophthalmology, University of Oxford, Levels 5, 6 West Wing, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, Oxford, United Kingdom

Universität Fridericiana zu Karlsruhe (Technische Hochschule), Dr -Ing Judith Elsner, Schlossplatz 19, 76131, Karlsruhe, Germany

Friedrich-Alexander-Universität Erlangen-Nürnberg, Dr. Carsten Schuer, Günther-Scharowsky-Straße 1/Bau 24, 91058, Erlangen, Germany

Friedrich-Schiller-Universität Jena, Prof. Dr. Thomas Pertsch, Max-Wien-Platz 1, 07743, Jena, Germany

School of Dentistry, The University of Manchester, Higher Cambridge Street, Manchester M15 6FH, Manchester, United Kingdom

School of Dentistry, The University of Manchester, Higher Cambridge Street, Manchester M15 6FH, Manchester, United Kingdom

Louwesweg 1, 1066 EA, Amsterdam, Amsterdam, Netherlands

P.O. Box 9101 , 6700 HB, Wageningen, Netherland