title: Learning to pair therapies and the expanding matrix for pulmonary arterial hypertension: Is more better?
authors.forename: M
authors.initials: M
authors.lastname: Gomberg-Maitland
mesh_terms: D004359:Drug Therapy, Combination; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy*; D012107:Research Design