Zanardo, Vincenzo, Franco Giacobbo, Pia Zambon, et al. "Antenatal aminophylline and steroid exposure: Effects on glomerular filtration rate and renal sodium excretion in preterm newborns" Journal of Perinatal Medicine - Official Journal of the WAPM, 18.4 (2009): 283-288. Retrieved 22 May. 2013, from doi:10.1515/jpme.1990.18.4.283

Zanardo, V., Giacobbo, F., Zambon, P., et al. (2009). Antenatal aminophylline and steroid exposure: Effects on glomerular filtration rate and renal sodium excretion in preterm newborns. Journal of Perinatal Medicine - Official Journal of the WAPM, 18(4), pp. 245-326. Retrieved 22 May. 2013, from doi:10.1515/jpme.1990.18.4.283

Zanardo, Vincenzo, Franco Giacobbo, Pia Zambon, et al. 2009. Antenatal aminophylline and steroid exposure: Effects on glomerular filtration rate and renal sodium excretion in preterm newborns. Journal of Perinatal Medicine - Official Journal of the WAPM. 18(4): 245-326. Retrieved 22 May. 2013, from doi:10.1515/jpme.1990.18.4.283