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Community Assessment of COPD Health Care (COACH) study: a clinical audit on primary care performance variability in COPD care.
Abad-Arranz M, Moran-Rodríguez A, Mascarós Balaguer E, Quintana Velasco C, Abad Polo L, Núñez Palomo S, Gonzálvez Rey J, Fernández Vargas AM, Hidalgo Requena A, Helguera Quevedo JM, García Pardo M, Lopez-Campos JL; COACH study investigators. Abad-Arranz M, et al. BMC Med Res Methodol. 2018 Jul 3;18(1):68. doi: 10.1186/s12874-018-0528-4. BMC Med Res Methodol. 2018. PMID: 29970023 Free PMC article.