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Fetal fraction of cell-free DNA in maternal plasma in the prediction of spontaneous preterm delivery.
Quezada MS, Francisco C, Dumitrascu-Biris D, Nicolaides KH, Poon LC.
Ultrasound Obstet Gynecol 2015;45:101-5. pdf -
Effectiveness of progestogens to improve perinatal outcome in twin pregnancies: an individual participant data meta-analysis.
Schuit E, Stock S, Rode L, Rouse DJ, Lim AC, Norman JE, Nassar AH, Serra V, Combs CA, Vayssiere C, Aboulghar MM, Wood S, Atetingaz E, Briery CM, Fonseca EB, Worda K, Tabor A, Thom EA, Caritis SN, Awwad J, Usta IM, Perales A.
BJOG 2015;122:27-37. pdf