By the age of 60, the level drops to 80 ng/ml
Intestinal microbiota of infants with colic: development and specific signatures
Mixing up these measurements can lead to ten-fold dosing errors
Ethics declarations Funding This work was funded by the National Institutes of Health/National Institute of Neurological Disorders and Stroke (R01NS120926 and R01NS127188 to S.A.G.), the Centers for Disease Control and Prevention/Agency for Toxic Substances and Disease Registry (R01TS000344 and R01TS000327 to S.A.G.), and James and Margaret Hiller and Linda and Eric Novak (S.A.G.)
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