1. Chasen ST. Peripartum and perioperative management of the anticoagulated patient. Obstet Gynecol Clin North Am 2006;33:493-7.

2. Chasen ST, Kalish RB, Chervenak FA. Gestational age at abortion: the impact of first-trimester risk assessment for aneuploidy. Am J Obstet Gynecol 2006;195:839-42.

3. Chasen ST, Luo G, Perni SC, Kalish RB. Are in vitro fertilization pregnancies with early spontaneous reduction high risk? Am J Obstet Gynecol 2006;195:814-7.

4. Chasen ST, Perni SC, Predanic M, Kalish RB, Chervenak FA. Does a "vanishing twin" affect first-trimester biochemistry in Down syndrome risk assessment? Am J Obstet Gynecol 2006;195:236-9.

5. Chervenak FA, McCullough LB, Chasen ST. Further evidence for first-trimester risk assessment as an autonomy-enhancing strategy. Ultrasound Obstet Gynecol 2006;27:355.

6. Perni SC, Predanic M, Kalish RB, Chervenak FA, Chasen ST. Clinical use of first-trimester aneuploidy screening can replicate data from clinical trials. Am J Obstet Gynecol 2006;194:127-30.

7. Perni SC, Vardhana S, Kalish R, Chasen S, Witkin SS. Clara cell protein 16 concentration in mid-trimester amniotic fluid: Association with fetal gender, fetal G>A +38 CC16 gene polymorphism and pregnancy outcome. J Reprod Immunol 2005;68:85-90.

8. Sharma G, Gold HT, Chervenak FA, McCullough L, Alt AK, Chasen ST. Patient preference regarding first-trimester aneuploidy risk assessment. Am J Obstet Gynecol. 2005;193:1429-1436.

9. Chasen ST, Kalish RB, Gupta M, Kaufman J, Chervenak FA. Obstetric outcomes after surgical abortion at > or = 20 weeks' gestation. Am J Obstet Gynecol 2005;193:1161-4.

10. Perni SC, Kalish RB, Hutson JM, Karasahin E, Bongiovanni AM, Ratushny V, Chasen ST, Witkin SS. Differential expression of immune system-related components in midtrimester amniotic fluid from singleton and twin pregnancies. Am J Obstet Gynecol. 2005;193:942-6.

11. Predanic M, Perni SC, Chasen ST, Baergen RN, Chervenak FA. Ultrasound evaluation of abnormal umbilical cord coiling in second trimester of gestation in association with adverse pregnancy outcome. Am J Obstet Gynecol. 2005;193:387-94.

12. Agrawala G, Predanic M, Perni SC, Chasen ST. Isolated fetal ascites caused by bowel perforation due to colonic atresia. J Matern Fetal Neonatal Med. 2005;17:291-4.

13. Chervenak FA, McCullough LB, Chasen ST. Clinical implications of the ethics of informed consent for first-trimester risk assessment for trisomy 21. Semin Perinatol 2005;29:277-9.

14. Predanic M, Perni SC, Chasen ST. The umbilical cord thickness measured at 18-23 weeks of gestational age. J Matern Fetal Neonatal Med 2005;17:111-6.

15. Predanic M, Perni SC, Friedman A, Chervenak FA, Chasen ST. Fetal growth assessment and neonatal birth weight in fetuses with an isolated single umbilical artery. Obstet Gynecol 2005;105:1093-7.

16. Chasen S, Spiro S, Kalish R, Chervenak F. Changes in fetal presentation in twin pregnancies. J Matern Fetal Neonatal Med 2005;17:45-8.

17. Predanic M, Perni SC, Chasen ST, Baergen RN, Chervenak FA. Assessment of umbilical cord coiling during the routine fetal sonographic anatomic survey in the second trimester. J Ultrasound Med 2005;24:185-91.

18. Kalish RB, Gupta M, Perni SC, Berman S, Chasen ST. Clinical significance of first trimester crown-rump length disparity in dichorionic twin gestations. Am J Obstet Gynecol 2004;191:1437-40.

19. Perni SC, Vardhana S, Korneeva I, Tuttle SL, Paraskevas LR, Chasen ST, Kalish RB, Witkin SS. Mycoplasma hominis and Ureaplasma urealyticum in midtrimester amniotic fluid: association with amniotic fluid cytokine levels and pregnancy outcome. Am J Obstet Gynecol 2004;191:1382-6.

20. Kalish RB, Vardhana S, Gupta M, Perni SC, Chasen ST, Witkin SS. Polymorphisms in the tumor necrosis factor-alpha gene at position -308 and the inducible 70 kd heat shock protein gene at position +1267 in multifetal pregnancies and preterm premature rupture of fetal membranes. Am J Obstet Gynecol 2004;191:1368-74.

21. Perni SC, Vardhana S, Tuttle SL, Kalish RB, Chasen ST, Witkin SS. Fetal interleukin-1 receptor antagonist gene polymorphism, intra-amniotic interleukin-1beta levels, and history of spontaneous abortion. Am J Obstet Gynecol 2004;191:1318-23.

22. Perni SC, Predanic M, Cho JE, Kalish RB, Chasen ST. Association of amniotic fluid index with estimated fetal weight. J Ultrasound Med 2004;23:1449-52.

23. Kalish RB, Thaler HT, Chasen ST, Gupta M, Berman SJ, Rosenwaks Z, Chervenak FA. First- and second-trimester ultrasound assessment of gestational age. Am J Obstet Gynecol 2004;191:975-8.

24. Sharma S, Perni SC, Predanic M, Kalish RB, Zervoudakis IA, Chasen ST. Atypical sonographic presentation of fetal unilateral inguinoscrotal hernia in a multiple gestation. J Perinat Med 2004;32:378-80.

25. Predanic M, Perni SC, Chasen S, Chervenak FA. Fetal aneuploidy and umbilical cord thickness measured between 14 and 23 weeks' gestational age. J Ultrasound Med 2004;23:1177-83.

26. Chasen ST, Kalish RB, Gupta M, Kaufman J, Rashbaum WK, Chervenak FA. Dilation and evacuation at 20 weeks: comparison of operative techniques. Am J Obstet Gynecol 2004; 19:1180-3.

27. Chasen ST, McCullough LB, Chervenak FA. Is nuchal translucency screening associated with different rates of invasive testing in an older obstetric population? Am J Obstet Gynecol 2004;190:769-74.

28. Chervenak FA, McCullough LB, Skupski D, Chasen ST. Ethical issues in the management of pregnancies complicated by fetal anomalies. Obstet Gynecol Surv. 2003;58:473-83.

29. Al-Kouatly HB, Chasen ST, Kalish RB, Chervenak FA. Causes of thrombocytopenia in triplet gestations. Am J Obstet Gynecol. 2003;189:177-80.

30. Kalish RB, Chasen ST, Gupta M, Sharma G, Perni SC, Chervenak FA. First trimester prediction of growth discordance in twin gestations. Am J Obstet Gynecol. 2003;189:706-9.

31. Kalish RB, Vardhana S, Gupta M, Chasen ST, Perni SC, Witkin SS. Interleukin-1 receptor antagonist gene polymorphism and multifetal pregnancy outcome. Am J Obstet Gynecol. 2003;189:911-4.

32. Chasen ST, Sharma G, Kalish RB, Chevenak FA. First trimester screening for aneuploidy with nuchal translucency in a United States population. Ultrasound Obstet Gynecol 2003; 22:149-51.

33. Sharma G, Kalish RB, Troiano, R, Heier L, Chasen ST. Use of fetal MRI in patients electing termination of by dilation and evacuation. Am J Obstet Gynecol 2003;189:990-3.

34. Sharma G, Kalish RB, Chasen ST. Prognostic factors associated with antenatal subchorionic collection. Am J Obstet Gynecol 2003;189:994-6.

35. Kalish RB, Chasen ST, Rosenzweig L, Rashbaum WK, Chervenak FA. Impact of mid-trimester dilation and evacuation on subsequent pregnancy outcome. Am J Obstet Gynecol 2002;187:882-5.

36. Chasen ST, Al-Kouatly HB, Ballabh P, Skupski DW, Chervenak FA. Outcomes of dichorionic triplets. Am J Obstet Gynecol 2002;186:765-7.

37. Skupski DW, Gurushanthaiah K, Chasen S. The effect of treatment of twin-twin transfusion syndrome on the diagnosis-to-delivery interval. Twin Res 2002;5:1-4.

38. Al-Kouatly HB, Chasen ST, Ahner R, Gilbert F, Chervenak FA. Correlation between rare chromosomal abnormalities and prenatal ultrasound findings. Am J Med Genet 2002; 107:197-200.

39. Chasen ST, Skupski DW, Chervenak FA, McCullough LB. Prenatal informed consent for sonogram: the time for first trimester nuchal translucency has come. J Ultrasound Med 2001;20:1147-52.

40. Al-Kouatly HB, Chasen ST, Karam AK, Ahner R, Chervenak FA. Factors associated with fetal demise in fetal echogenic bowel. Am J Obstet Gynecol. 2001;185:1039-43.

41. Al-Kouatly HB, Chasen ST, Streltzoff J, Chervenak FA. The clinical significance of fetal echogenic bowel. Am J Obstet Gynecol. 2001;185:1035-8.

42. Chasen ST, Chervenak FA, McCullough LB. The role of cephalocentesis in modern obstetrics. Am J Obstet Gynecol. 2001;185:734-6.

43. Chasen ST, Al-Kouatly HB, Chervenak FA. Correlation between prenatal and neonatal birth order in twins. Am J Perinatol 2001.

44. Chasen ST, Madden A, Chervenak FA. Cesarean delivery of twins and neonatal respiratory disorders. Am J Obstet Gynecol 1999;181:1052-6.

45. Chasen ST, Loeb-Zeitlin S, Landsberger EJ. Hemoglobinopathy screening in pregnancy: comparison of two protocols. Am J Perinatol 1999;16:175-80.

46. Khabele D, Chasen ST. Cardiac tamponade: an unusual presentation of breast cancer in pregnancy. J Reprod Med 1999;44:989-91.

47. Chasen ST, Baergen R. Necrotizing funisitis with intrapartum umbilical cord rupture. J Perinatol 1999;19:325-6.

48. Borruto F, Chasen S, Chervenak FA, Fedele L. The Vecchietti procedure for surgical treatment of vaginal agenesis: comparison of laparoscopy and laparotomy. Int J Gynaecol Obstet 1999;64:153-8.

49. Lopoo JB, Hedrick MH, Chasen S, Montgomery L, Chervenak FA, Goldstein R, Hoffman WY, Harrison MR, Longaker MT. Natural history of fetuses with cleft lip. Plast Reconstr Surg 1999;103:34-8.

50. Chasen ST, Chervenak FA. What is the relationship between the universal use of ultrasound, the rate of detection of twin, and outcome differences? Clin Obstet Gynecol 1998;41:66-77.

51. Chasen ST, Silverman NS. Emergent cerclage: a ten-year single institution review. J Perinatol 1998;18:338-42.

52. Gorbe E, Chasen S, Harmath A, Patkos P, Papp Z. Very-low-birthweight breech infants: short-term outcomes by method of delivery. J MFM 1997;6:155-8.

53. Lagunowich LA, Schneider JC, Chasen S, Grunwald GB. Immunohistochemical and biochemical analysis of N-cadherin expression during CNS development. J Neurosci Res 1992;32:202-8.

CHAPTERS/INVITED CONTRIBUTIONS

1. Chasen ST, Chervenak FA. ?Antepartum Management of Twin Pregnancy.? UpToDate. Boston: UpToDate, 2005.

2. Chasen ST, Chervenak FA. ?Intrapartum Management of Twin Pregnancy.? UpToDate. Boston: UpToDate, 2005.

3. Chasen, ST. ?Echogenic Bowel.? UpToDate. Boston: UpToDate, 2005.

4. Chasen ST. ?The natural history of high-order multiples.? In Iatrogenic Multiple Pregnancy, Blickstein I, Keith LG eds. London: Parthenon Publishing, 2001.

5. Chasen ST, Skupski DW. ?The early recognition of iatrogenic multiple pregnancy. In Iatrogenic Multiple Pregnancy, Blickstein I, Keith LG eds. London: Parthenon Publishing, 2001.

6. Chasen ST, Chervenak FA. ?Anomalies of the central nervous system? and ?Facial anomalies.? In Fetal Disorders, ed. Petrikovsky BM. New York: Wiley-Liss, 1999.

7. Chasen ST. ?Hemoglobinopathy screening in pregnancy.? In The Fetus as Patient, 2nd Edition, Chervenak FA, Kurjak A eds.. London: Parthenon Publishing, 1999.

8. Chasen ST, Inglis SR. ?Anemia in pregnancy: case studies.? In Hospital Physician Obstetrics and Gynecology Board Review Manual. Wayne, Pennsylvania: Turner-White Communications, 1998.

9. Chasen ST, Chervenak FA. Contributed to Fetal Ultrasound Simulator CD-ROM. Washington, DC: American College of Obstetricians and Gynecology, 1999.