Initial combination therapy with macitentan and tadalafil in patients with pulmonary arterial hypertension, with and without cardiac comorbidities. - McLaughlin, Vallerie V.; Sitbon, Olivier; Chin, Kelly M.; Galiè, Nazzareno; Hoeper, Marius M.; Kiely, David G.; MacDonald, Gwen; Martin, Nicolas; Mathai, Stephen C.; Peacock, Andrew; Tawakol, Ahmed; Torbicki, Adam; et al. (European Journal of Heart Failure, 2024)