1. Massachusetts General Hospital, Harvard
Medical School, Orthopaedic Hand and Upper
Extremity Service, Yawkey Center, Suite
2100, 55 Fruit Street, Boston, Massachusetts
02114, USA.
2. Onze Lieve Vrouwe Gasthuis, Department
of Orthopaedic Surgery, Postbus 95500, 1090
HM Amsterdam, The Netherlands.
3. Hamilton Health Sciences-General Hospital, Hamilton, Ontario
L8N3Z5, Canada.
4. Massachusetts General Hospital, Department
of Orthopaedic Surgery, 55 Fruit St, YAW-2-2C, Boston, Massachusetts
02114, USA.