1. Sildenafil exposure in neonates with pulmonary hypertension after administration via a nasogastric tube. Issue 2 (30th November 2009) Authors: Ahsman, Maurice J; Witjes, Bregje C; Wildschut, Enno D; Sluiter, Ilona; Vulto, Arnold G; Tibboel, Dick; Mathot, Ron A Journal: Archives of disease in childhood Issue: Volume 95:Issue 2(2010) Page Start: F109 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗