1 Andrea Miranda-Mendizábal, MD, MPH, Health Services Research Group, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, and Department of Health and Experimental Sciences, Pompeu Fabra University (UPF), Barcelona, Spain; Jordi Alonso, MD, PhD, Health Services Research Group, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Department of Health and Experimental Sciences, Pompeu Fabra University (UPF), Barcelona, and Centra de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain. Email: Jalonso@IMIM.ES.