1. Heinonen S., Ryynänen M., Kirkinen P. Etiology and outcome of second trimester non-immunologic fetal hydrops. Acta Obstet Gynecol Scand 2000; 79: 1: 15-18.
2. Santolaya J., Alley D., Jaffe R., Warsof S.L. Antenatal classification of hydrops fetalis. Obstet Gynecol 1992; 79: 2: 256-259.
3. Cunningham F.G., Leveno K.J., Bloom S.L., Hauth J.C., Rouse D.J., Catherine Y., Spong C.Y. Williams Obstetrics. 23rd Ed. McGraw-Hill Professional 2009.
4. Okeke T.C., Egbugara M.N., Ezenyeaku C.C., Ikeako L.C. Non-immune hydrops fetalis. Niger J Med 2013; 22: 4: 266-273.
5. Bellini C., Hennekam R.C., Fulcheri E., Rutigliani M., Morcaldi G., Boccardo F., Bonioli E. Etiology of nonimmune hydrops fetalis: a systematic review. Am J Med Genet A 2009; 149: 5: 844-851.