8Simiyu DE, Okello C, Nyakundi EG,et al. Sildenafil in management of persistent pulmonary hypertension of the newborn : Report of two cases [J]. East Aft Med J,2006,83 (6) :337 -340.
9Latini G, del Vecchio A, de Felice C, et al. Persistent pulmonary hypertension of the newborn: Therapeutical approach [ J ]. Mini Rev Med Chem,2008,8 (14) : 1507 - 1513.
10Ramanathan R, Sardesai S. Lung protective ventilatory strategies in very low birth weight infants[ J]. J Perinatol,2008,28 (suppl 1 ) :41 -46.
