Borgaonkar DS , Lacassie YE, Stoll C.: Usefulness of chromosome catalog in delineating new syndromes. Birth Defects1976;12:87-95.
2.
Back E., Voiculescu I., Bringer M., Wolff G.: Familial ring (20) chromosomal mosaicism. Hum Genet1989;83:148-154.
3.
Porfirio B., Volarini MG, Gianotti A., et al: Ring chromosome 20 phenotype. J Med Genet1987;24:375-377.
4.
Faed M., Morton HG, Robertson J.: Ring F chromosome mosaicism (46,XY,20r/46,XY) in an epileptic child without apparent haematological disease. J Med Genet1972;9:470-473.
5.
Jalbert P., Jalbert H., Sele B., et al: Chromosome 20 en anneau: Un nouveau syndrome. Ann Genet1977;20:258-262.
6.
Stewart JM, Cavanagh N., Hughes DT: Ring 20 chromosome in a child with seizures, minor abnormalities and retardation . Arch Dis Child1979;54:477-479.
7.
Uchida JA, Lin CC: Ring formation of chromosomes nos 19 and 20. Cytogenetics1972;11:208-215.
8.
Burnell RH, Stern LM, Sutherland GR: A case of ring 20 chromosome with cardiac and renal abnormalities . Aust Pediatr J1985;21:285-286.