Institution: | Onze Lieve Vrouwe Gasthuis, Amsterdam, the Netherlands (P. Gruteke); ;Amsterdam Health Service, Amsterdam (P. Gruteke); ;University of Hong Kong, Hong Kong, China (P.-L. Ho, W.-U. Lo, C.-H. Lin); ;National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands (A. Haenen, A.J. de Neeling) |