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Schaap, Laura A., Geeske MEE Peeters, Elaine M. Dennison, Sabina Zambon, Thorsten Nikolaus, Mercedes Sanchez-Martinez, Estella Musacchio, Natasja M. van Schoor, and Dorly JH Deeg. European Project On Osteoarthritis (EPOSA): Methodological Challenges in Harmonization of Existing Data From Five European Population-based Cohorts On Aging. BioMed Central, 2011.

Schaap, Laura A., et al. European Project On Osteoarthritis (EPOSA): Methodological Challenges in Harmonization of Existing Data From Five European Population-based Cohorts On Aging. BioMed Central, 2011.