Safety of inhaled nitric oxide withdrawal in severe chronic pulmonary hypertension.

"CONFLICT OF INTEREST STATEMENT The authors declare no conflict of interest."

"The authors thank Vicente Morales Garcia and Jose Andrés Ortiz Santana for their technical support and editorial assistance. The authors did not at any time receive at any time payment or services from a third party (government, commercial, private foundation, etc.) for any aspect of the submitted work (including but not limited to grants, data monitoring board, study design, manuscript preparation, statistical analysis, etc.). Moreover, the authors do not have no other relationships or activities that readers could perceive as having influenced us, or that give the appearance of having potentially influenced us. We have received funding solely for publication in the Pulmonary Circulation Journal from the Canarian Foundation for Health Research of the Canary Islands, University Hospital of Gran Canaria Doctor Negrín. Address: C. Pl. Barranco de la Ballena, 35012 Las Palmas de Gran Canaria, Las Palmas. Spain."