Additional file 1 of Maternal blood folate status during early pregnancy and occurrence of autism spectrum disorder in offspring: a study of 62 serum biomarkers

Additional file 1: Figure S1. Seasonal variations of studied biomarkers. The smooth line was fitted with locally weighted scatterplot smoothing (loess). a All participants. b Case group. c Control group.附加文件1：图S1。所研究生物标志物的季节变化。平滑曲线通过局部加权散点平滑（locally weighted scatterplot smoothing, loess）拟合。a 所有受试者。b 病例组。c 对照组。