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Variants:Sleep B2G1 (3pcs)

These discrepancies can be attributed to the size of the cohort, geographical location of the cohort, timing of patient enrollment, sample matrix (urine versus blood versus FF), sample collection frequency (a singular sample versus the average of multiple collections), timing of sample collection on a given day (morning versus evening), timing of sample collection during a life-stage event (preconception versus early pregnancy versus late pregnancy), analytical methods used for measurements, and design of the study, among other potential variables