Rybníček, O: The comparison of efficacy and safety of inhaled versus parenteral corticosteroids in the prevention and treatment of bronchopulmonary dysplasia : 1st International Symposium on Perinatal and Neonatal Developmental Medicine. Very-Low-Birth Weight/Extremely Low-Birth Weigh Infant: Delivery and Initial Care. Prague, November 5-7, 2000. Abstrakt