Phthalate levels in Chinese residences: Seasonal and regional variations and the implication on human exposureYatai Li, Jing Hou, Zukun Wang, Xilei Dai, Yuexia Sun, Junjie Liu and Yingjun LiuNatl Sci Open, 2 6 (2023) 20230011DOI: https://doi.org/10.1360/nso/20230011