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SOBRINA Spanish study-analysing the frequency, cost and adverse events associated with overuse in primary care: protocol for a retrospective cohort study.
Mira JJ, Carrillo I, Gea Velázquez de Castro MT, Silvestre C, Olivera G, Caro-Mendivelso J, Pérez-Pérez P, Agra Y, Fernández AM, Aranaz-Andrés JM; SOBRINA Research Team. Mira JJ, et al. BMJ Open. 2019 Mar 4;9(3):e023399. doi: 10.1136/bmjopen-2018-023399. BMJ Open. 2019. PMID: 30837247 Free PMC article.