4. Ballard JL, Khoury JC, Wedig K, Wang L, Eilers-Walsman BL, Lipp R.
Ballard JL, Khoury JC, Wedig K, Wang L, Eilers-Walsman BL, Lipp R. The New Ballard Score, expanded to include extremely premature infants. J Pediatr 119:417-423, 1991.
5. Gould JB, Gluck L, Kulovich MV.
Gould JB, Gluck L, Kulovich MV. The relationship between accelerated pulmonary maturity and accelerated neurological maturity in certain chronically stressed pregnancies. Am J Obstet Gynecol 127:181, 1977.
6. Amiel-Tison C.
Amiel-Tison C. Possible acceleration of neurologic maturation following high-risk pregnancy. Am J Obstet Gynecol 138:303-306,1980.