title: Erratum to: Serum progesterone levels greater than 20 ng/ml on day of embryo transfer are associated with lower live birth and higher pregnancy loss rates.
authors.affiliation: NYU Fertility Center, NYU Langone School of Medicine, 660 First Avenue, 5th floor, New York, NY, 10016, USA. Jason.Kofinas@gmail.com.
authors.forename: Jason D
authors.initials: JD
authors.lastname: Kofinas
authors.affiliation: NYU Fertility Center, NYU Langone School of Medicine, 660 First Avenue, 5th floor, New York, NY, 10016, USA.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Blakemore
authors.affiliation: NYU Fertility Center, NYU Langone School of Medicine, 660 First Avenue, 5th floor, New York, NY, 10016, USA.
authors.forename: David H
authors.initials: DH
authors.lastname: McCulloh
authors.affiliation: NYU Fertility Center, NYU Langone School of Medicine, 660 First Avenue, 5th floor, New York, NY, 10016, USA.
authors.forename: Jamie
authors.initials: J
authors.lastname: Grifo