Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Feller, M; Adam, M; Zwahlen, M; Brazzola, P; Niggli, F; Kuehni, C (2010). Family characteristics as risk factors for childhood acute lymphoblastic leukemia: a population-based case-control study. PLoS ONE, 5(10):e13156.