1. Department of Obstetrics and Gynecology, Innsbruck Medical University, Innsbruck, Austria.
2. Department of Obstetrics and Gynecology, Hospital of Bregenz, Bregenz, Austria.
3. Official Food Control Authority of the Canton of Zurich, Zurich, Switzerland.
4. Department of Cardiac Surgery, Innsbruck Medical University, Innsbruck, Austria.
5. Institute for Food Investigation of the State Vorarlberg, Bregenz, Austria.
6. Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Innsbruck, Austria.