References
- Quintero RA, Morales WJ, Allen MH, Bornick PW, Johnson PK, Kruger M. Staging of twin-twin transfusion syndrome. J Perinatol 1999;19:550–555.
- Redline RW, Heller D, Keating S, Kingdom J. Placental diagnostic criteria and clinical correlation – a workshop report. Placenta 2005;26(Suppl A):S114–S117.
- Frisch L, Arava J, David H, Jaschevatzky OE, Ballas S. Severe twin-to-twin transfusion syndrome: a new sonographic feature of the placenta. Ultrasound Obstet Gynecol 1997;10:145–146.
- Lees CC, Schwarzler P, Ville Y, Campbell S. Stuck twin syndrome without signs of twin-to-twin transfusion. Ultrasound Obstet Gynecol 1998;12:211–214.
- Kumazaki K, Nakayama M, Suehara N, Wada Y. Expression of vascular endothelial growth factor, placental growth factor, and their receptors Flt-1 and KDR in human placenta under pathologic conditions. Hum Pathol 2002;33:1069–1077.
- Kusanovic JP, Romero R, Espinoza J, Nien JK, Kim CJ, Mittal P, Edwin S, Erez O, Gotsch F, Mazaki-Tovi S, et al Twin-to-twin transfusion syndrome: an antiangiogenic state? Am J Obstet Gynecol 2008;198:382–388.