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Torres-Piles S ,Caro-Puertolas B

Espejo-Antunez L, Cardero-Duran MA, Garrido-ArdilaEM,

Rheumatology. 2013;52:659-668. doi: 10.1093/rheumatology/kes322.

https://pubmed.ncbi.nlm.nih.gov/23236190/