Methods: Cases series study involved 28 preterm infants with pulmonary hemorrhage 28 very preterm neonates met the proposed criteria for pulmonary hemorrhage with male / female ratio was 1/1.15.
Đối tượng - Phương pháp nghiên cứu: Mô tả hàng loạt ca 28 trẻ XHP với tỉ lệ nam / nữ là 1/1, 15.