About the Authors

Joana Caetano-Lopes

Affiliation Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal

Ana Lopes

Affiliation Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal

Ana Rodrigues

Affiliations Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal, Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, Lisbon, Portugal

Diana Fernandes

Affiliation Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal

Inês P. Perpétuo

Affiliation Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal

Teresa Monjardino

Affiliations Department of Hygiene and Epidemiology, University of Porto Medical School, Porto, Portugal, Institute of Public Health, University of Porto, Porto, Portugal

Raquel Lucas

Affiliations Department of Hygiene and Epidemiology, University of Porto Medical School, Porto, Portugal, Institute of Public Health, University of Porto, Porto, Portugal

Jacinto Monteiro

Affiliation Orthopaedics Department, Hospital de Santa Maria, Lisbon, Portugal

Yrjö T. Konttinen

Affiliations Department of Medicine, University of Helsinki, Helsinki, Finland, ORTON Orthopaedic Hospital of the Invalid Foundation, Helsinki, Finland, COXA Hospital for Joint Replacement, Tampere, Finland

Helena Canhão

Contributed equally to this work with: Helena Canhão, João E. Fonseca

Affiliations Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal, Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, Lisbon, Portugal

João E. Fonseca

Contributed equally to this work with: Helena Canhão, João E. Fonseca

jefonseca@netcabo.pt

Affiliations Rheumatology Research Unit, Faculdade de Medicina da Universidade de Lisboa, Instituto de Medicina Molecular, Lisbon, Portugal, Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, Lisbon, Portugal

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YTK HC JEF. Performed the experiments: JCL AL DF IP. Analyzed the data: TM RL. Contributed reagents/materials/analysis tools: AR JM. Wrote the paper: JCL AR HC JEF.