1. Berkowitz RL, Lynch L. Selective reduction: an unfortunate misnomer. Obstet Gynecol. 1990;75(5):873–4.
2. Gonen R, Heyman E, Asztalos EV, Ohlsson A, Pitson LC, Shennan AT, Milligan JE. The outcome of triplet, quadruplet and quintuplet pregnancies managed in a perinatal unit: obstetric neonatal and follow-up data. Am J Obstet Gynecol. 1990;162(2):454–9.
3. Martin JA, Hamilton BE, Osterman MJ. Three decades of twin births in the United States, 1980–2009. NCHS Data Brief. 2012;80:1–8.
4. Martin JA, Hamilton BE, Ventura SJ, Osterman MJ, Wilson EC, Mathews TJ. Births: final data for 2010. Natl Vital Stat Rep. 2012;61(1):1–100.
5. Berkowitz RL, Lynch L, Chitkara U, Wilkins IA, Mehalek KE, Alvarez E. Selective reduction of multifetal pregnancies in the first trimester. N Engl J Med. 1988;318(16):1043–7.