Trends in hip fracture in patients with rheumatoid arthritis: results from the Spanish National Inpatient Registry over a 17-year period (1999-2015)

RMD Open. 2018 Jun  4;4(1):e000671.

Mazzucchelli R, Pérez Fernandez E, Crespí-Villarías N, Quirós-Donate J, García Vadillo A, Espinosa M, Peña M, Macía-Villa C, Morell-Hita JL, Martinez-Prada C,Villaverde V, Morado Quiroga I, Guzón-Illescas O, Barbadillo C, Fernández Prada M, Godoy H, Herranz Varela A, Galindo Izquierdo M, Rodriguez Caravaca G. TREND-AR study.

https://www.ncbi.nlm.nih.gov/pubmed/29955384