Drupal-Bibcite0<style face="normal" font="default" size="100%">Perinatal photoperiod and childhood cancer: pooled results from 182,856 individuals in the international childhood cancer cohort consortium (I4C).</style><style face="normal" font="default" size="100%">Perinatal photoperiod and childhood cancer: pooled results from 182,856 individuals in the international childhood cancer cohort consortium (I4C).</style>