Schiffer VMMM, Pellaers D, Hoenen JLJM, van Kuijk SMJ, et al. Feasibility of three dimensional power Doppler ultrasonography methods to assess
placental perfusion. Eur J Obstet Gynecol Reprod Biol 2020 Aug 23. pii: S0301-2115(20)30517.
PMID: 33008645