External background ionizing radiation and childhood cancer: Update of a nationwide cohort analysis.

Background: Exposure to high doses of ionizing radiation is known to cause cancer. Exposure during childhood is associated with a greater excess relative risk for leukemia and tumors of the central nervous system (CNS) than exposure in later life. Cancer risks associated with low-dose exposure (<100 mSv) are uncertain.

Spatial epidemiology of gestational age and birth weight in Switzerland: census-based linkage study.

Background: Gestational age and birth weight are strong predictors of infant morbidity and mortality. Understanding spatial variation can inform policies to reduce health inequalities. We examined small-area variation in gestational age and birth weight in Switzerland.

Temporal trends in incidence of childhood cancer in Switzerland, 1985-2014.

Background: Incidence of childhood cancer increased in most countries worldwide, but reasons are unclear. This study investigates trends of childhood cancer incidence in Switzerland from 1985 to 2014.

Methods: We extracted data on all childhood cancer cases diagnosed at ages 0-14 years in Switzerland from the Swiss Childhood Cancer Registry.

Death certificate notifications in the Swiss Childhood Cancer Registry: assessing completeness and registration procedures.

Questions Under Study: Completeness is important in cancer registration. Identifying areas to improve registry procedures might help to maximise completeness. We examined characteristics of childhood cancer cases that were registered via death certificate notification (DCN) rather than during life, and estimated completeness of the Swiss Childhood Cancer Registry (SCCR).