The researchers emphasize that these differences are a result of the unique environment for twins—such as sharing parental ...

Objectives Quality collaboratives improve quality of care at the hospital and collaborative levels, but less is understood ...

This article examines the regional and temporal variations in public fiscal effort in education in the USA, which is a gauge of state-level investment in relation to economic capacity. Data from 2006 ...

Objectives To assess the association between epidural analgesia (EDA) experience and subsequent fertility intention among ...