Luque-Fernandez, M. A.; Gelaye, B.; VanderWeele, Tyler; … - Institute for Quantitative Social Science, Harvard …
Background: Vitamin D deficiency during pregnancy has been associated with increased risk of complications and adverse perinatal outcomes. We evaluated seasonal variation of 25-hydroxyvitamin D [25(OH)D] among pregnant women, focusing on patterns and determinants of variation. Methods: Data came...