Temporal variability of organophosphate flame retardant metabolites in spot, first morning, and 24-h urine samples among healthy adults

Limei Wang, Dan Luo, Xiang Li, Liqin Hu, Jun‐Xiang Chen, Zhou‐Zheng Tu, Bin Sun, Heng‐Gui Chen, Ling Liu, Meng Yu, Yaping Li, An Pan, Carmen Messerlian, Surong Mei, Yixin Wang