Istanbul University Istanbul Medical Faculty, Istanbul, Turkey
Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
Ankara University Medical Faculty, Ankara, Turkey
The University of Hong Kong; Pharmacy Clinical Trials, Hong Kong, Hong Kong
Christchurch Clinical Studies Trust, Christchurch, New Zealand
Auckland Clinical Studies Limited, Grafton, New Zealand
Hopital Pellegrin; Rhumatologie, Bordeaux, France
Hopital Cochin; Rhumatologie B, Paris, France
Hopital Hautepierre; Rhumatologie, Strasbourg, France