Maintenance work on the ZORA database servers is scheduled for Thursday 25th July 2019 from 19:00-20:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Bosshardt, Daniela; Ajdacic-Gross, Vladeta; Lang, Phung; Bosshardt, Mathias; Bopp, Matthias; Addor, Marie-Claude; Gutzwiller, Felix (2005). Season of birth in valvular heart disease. Paediatric and Perinatal Epidemiology, 19(3):246-252.