• 1
    Berkowitz GS, Papiernik E. Epidemiology of preterm delivery. Epidemiol Rev 1993; 15: 414443.
  • 2
    Olsen P, Läärä E, Rantakallio P, Järvelin MR, Sarpola A, Hartikainen AL. Epidemiology of preterm delivery in two birth cohorts with an interval of 20 years. Am J Epidemiol 1995; 142: 11841193.
  • 3
    Spinillo A, Capuzzo E, Stronati M, Iasci A, Ometto A, Solerte L. Early neonatal complications after elective preterm delivery in hypertensive pregnancies. J Perinat Med 1995; 23: 175181.
  • 4
    Meis PJ, Michielutte R, Peters TJ et al. Factors associated with preterm birth in Cardiff, Wales. II. Indicated and spontaneous preterm birth. Am J Obstet Gynecol 1995; 173: 597602.
  • 5
    Northway WH, Rosan RC, Porter DY. Pulmonary disease following respirator therapy of hyaline-membrane disease. N Engl J Med 1967; 276: 357368.
  • 6
    Da Silva O, Ohlsson A, Kenyon C. Accuracy of leucocyte indices and C-reactive protein for diagnosis for neonatal sepsis. A critical review. Pediatr Infect Dis J 1995; 14: 362366.
  • 7
    Koh THHG, Aynsley-Green A, Tarbit M, Eyre JA. Neural dysfunction during hypoglycaemia. Arch Dis Child 1988; 63: 13531358.
  • 8
    Papile LA, Burstein J, Burstein R, Koffler H. Incidence and evolution of subependymal and intraventricular haemorrhage. A study of infants with birth weights less than 1500 g. J Pediatrics 1978; 92: 529534.
  • 9
    Stringini F, Lencioni G, De Luca G, Lombardo M, Bianchi F, Genazzani AR. Uterine artery velocimetry and spontaneous preterm birth. Obstet Gynecol 1995; 85: 374377.
  • 10
    Brar HS, Medearis AL, De Vore GR, Platt LD. Maternal and fetal blood flow velocity waveforms in patients with preterm labour: relation with outcome. Am J Obstet Gynecol 1989; 161: 15191522.
  • 11
    Wolff EJ, Vintzileos AM, Rosenkrantz TS, Rodis JF, Salafia CM, Pezullo JG. Do survival and morbidity of very-low-birth-weight infants vary according to the primary pregnancy complication that results in preterm delivery Am J Obstet Gynecol 1993; 169: 12331239.
  • 12
    Iannucci TA, Tomich PG, Gianopoulos JG. Etiology and outcome of extremely low-birth-weight infants. Am J Obstet Gynecol 1996; 174: 18961902.
  • 13
    Role of endogenous corticosteroids. In: BallardPL, editor. Hormones and Lung Maturation. New York : Springer Verlag, 1986: 127128.
  • 14
    Nimrod C, Varela-Gittings F, Machin G, Campbell D. The effect of very prolonged membrane rupture on fetal development. Am J Obstet Gynecol 1984; 148: 540543.
  • 15
    Hallman M, Merrit TA, Kari A, Bry K. Factors affecting surfactant responsiveness. Ann Med 1991; 23: 693698.
  • 16
    Murphy DJ, Sellers S, MacKenzie IZ, Yudkin PL, Johnson AM. Case-control study of antenatal and intrapartum risk factors for cerebral palsy in very preterm singleton babies. Lancet 1995; 346: 14491454.
  • 17
    Lubchenco LO, Bard H. Incidence of hypoglycemia in newborn infants classified by birth weight and gestational age. Pediatrics 1971; 47: 831838.
  • 18
    Bancalari E, Gerhardt T. Bronchopulmonary dysplasia. Pediat Clin North Am 1986; 33: 123.
  • 19
    Kurkinen-Räty M, Koivisto M, Jouppila P. Perinatal and neonatal outcome and late pulmonary sequelae in infants born after preterm premature rupture of membranes. Obstet Gynecol 1998; 92: 408415.
  • 20
    Hack M, Taylor HG, Klein N, Eiben R, Schatschneider C, Mercuri-Minich N. School-age outcomes in children with birth weights under 750 g. N Engl J Med 1994; 331: 753759.
  • 21
    Fitzhardinge PM, Steven EM. The small-for-date infant. I. Later growth patterns. Pediatrics 1972; 49: 671681.