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Schedule of CPF application and sampling across the ten-month longitudinal study. The shaded area represents the CPF application period for field station 2. CPF was applied in field station 1 from Day 73–84, Day87–97and Day 112–119. All field station 2 collection dates were one day after field station 1 collection dates. Solid arrows represent combined blood and urine sample collection dates; dashed arrows represent urine-only collection dates relevant to the current study.
