Could We Maintain the Initial Efficacy of Triple Sequential Combination Therapies with Selexipag Against Progressive Deterioration Risk in Patients with Pulmonary Arterial Hypertension: Insights from a Single-Center Study? - Tokgöz, Hacer Ceren; Kaymaz, Cihangir; Kültürsay, Barkın; Tanyeri, Seda; Buluş, Çağdaş; Sırma, Dicle; Atıcı, Şeyma Zeynep; Kibar, Metehan; Küçük, Ayşenur; Çiçek, Şeyma Nur; Vezir, Aziz; Erdem, Can; et al. (Anatolian Journal of Cardiology / Anadolu Kardiyoloji Dergisi, 2026)