"Prenatal Consultation at the Limits of Viability Archived 2009-06-08 at the Wayback Machine.", NeoReviews, Vol.4 No.6 (2003): "most neonatologists would agree that survival of infants younger than approximately 22 to 23 weeks’ estimated gestational age [i.e. 20 to 21 weeks' estimated fertilization age] is universally dismal and that resuscitative efforts should not be undertaken when a neonate is born at this point in pregnancy." 1 2 3 Moore, Keith and Persaud, T. The Developing Human: Clinically Oriented Embryology, p.