Scientific Letter
                                    Evaluation of pulmonary vascular resistance and vasoreactivity testing with oxygen in children with congenital heart disease and pulmonary arterial hypertension
                                    
                                    
                                                                                                                                    1Department of Pediatric Cardiology, Faculty of Medicine, Gazi University, Ankara-Turkey
2Gazi Üniversitesi Tıp Fakültesi, Çocuk Kardiyoloji, Ankara, Türkiye
3Department of Pediatric Cardiology Faculty of Medicine, Gazi University, Beşevler, Ankara, Turkey
4Gazi Üniversitesi Tıp Fakültesi, Çocuk Kardiyolojisi Anabilim Dalı, Ankara, Türkiye
5Department of Pediatric Cardiology, Dışkapı Children’s Hospital, Ankara-Turkey
6Department of Pediatrics, Faculty of Medicine Kırıkkale University, Kırıkkale, Turkey
                                                                                                                        
                                    
                                2Gazi Üniversitesi Tıp Fakültesi, Çocuk Kardiyoloji, Ankara, Türkiye
3Department of Pediatric Cardiology Faculty of Medicine, Gazi University, Beşevler, Ankara, Turkey
4Gazi Üniversitesi Tıp Fakültesi, Çocuk Kardiyolojisi Anabilim Dalı, Ankara, Türkiye
5Department of Pediatric Cardiology, Dışkapı Children’s Hospital, Ankara-Turkey
6Department of Pediatrics, Faculty of Medicine Kırıkkale University, Kırıkkale, Turkey