TY - RPRT A1 - Symul, L. A1 - Hsieh, P. A1 - Shea, A. A1 - Castro Moreno, C.R. A1 - Skene, D. A1 - Holmes, S. A1 - Martinez, M.E. T1 - Unmasking seasonal cycles in human fertility: How holiday sex and fertility cycles shape birth seasonality. Y1 - 2020 DO - 10.1101/2020.11.19.20235010 T3 - medRxiv ER -