THE AUTHORS REPLY

Affiliations

• ¹ Horten Centre for Patient Oriented Research and Knowledge Transfer, University of Zurich, Zurich, Switzerland.
• ² Clinical Epidemiology and Medical Technology Assessment, University Hospital Maastricht, Maastricht, the Netherlands.
• ³ Center for Research and Environmental Epidemiology, Barcelona, Spain.
• ⁴ Hospital del Mar Research Institute, Barcelona, Spain.
• ⁵ Universitat Pompeu Fabra, Barcelona, Spain.
• ⁶ CIBER de Epidemiologia y Salud Pública, Barcelona, Spain.
• ⁷ Department of General Practice, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands.
• ⁸ Julius Centre for Health Sciences and General Practice, University Medical Center Utrecht, Utrecht, the Netherlands.
• ⁹ Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.
• ¹⁰ Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD.