Fig. 2From: The Home Observation of Periconceptional Exposures (HOPE) study, a prospective cohort: aims, design, recruitment and complianceScreening, eligibility, enrollment, and biospecimen completion. aFour of the five couples withdrew due to changed pregnancy intentions and one couple withdrew due to concerns about fertility. bAsked to leave the study due to uninterpretable cervical fluid without recognizable estimated day of ovulation. cOne couple withdrew due to changed pregnancy intentions and the other due to stressBack to article page