Borra, Cristina; González, Libertad; Patiño, David - 2023
children of December-born mothers, the children of January-born mothers are more likely to have very low birthweight. We then …We study the effects of school starting age on siblings' infant health. In Spain, children born in December start … discontinuity design to compare the health at birth of the children of women born in January versus the previous December, using …