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Metcalfe, David, Salim, Ali, Olufajo, Olubode, Gabbe, Belinda, Zogg, Cheryl, Harris, Mitchel B, Perry, Daniel C 
ORCID: 0000-0001-8420-8252 and Costa, Matthew L
(2016)
Hospital case volume and outcomes for proximal femoral fractures in the USA: an observational study.
BMJ OPEN, 6 (4).
e010743-.