TY - JOUR T1 - Maternal vitamin D, cord blood cytokines, and early childhood allergic diseases: a 2-year cohort study JO - Jornal de Pediatria A1 - Zhang, Zheng A1 - Zhan, Tao A1 - Hu, Jiahui A1 - Zhong, Yongxing SN - 0021-7557 UL - 10.1016/j.jped.2026.101544 VL - 102 Y1 - 2026 PB - Brasil ER -