Reply: To PMID 25370843.
Copenhagen University Hospital, Frederiksberg, Denmark and Copenhagen University Hospital at Glostrup, Glostrup, Denmark.
Søren
S
Torp-Pedersen
Copenhagen University Hospital, Frederiksberg, Denmark.
Robin
R
Christensen
Copenhagen University Hospital, Frederiksberg, Denmark.
Karen
K
Ellegaard
Copenhagen University Hospital, Frederiksberg, Denmark.
Arendse
A
Torp-Pedersen
University of Copenhagen Hospital at Køge, Køge, Denmark.
Marcin
M
Szkudlarek
Ambroise-Paré Hospital, AP-HP, Boulogne-Billancourt, France.
Maria Antonietta
MA
D'Agostino
Sapienza Università di Roma, Rome, Italy.
Annamaria
A
Iagnocco
Hospital General Universitario Gregorio Marañón, Madrid, Spain.
Esperanza
E
Naredo
National Institute of Rheumatology and Physiotherapy, Budapest, Hungary.
Peter
P
Balint
University of Leeds, Leeds, UK.
Richard J
RJ
Wakefield
Copenhagen University Hospital at Glostrup, Glostrup, Denmark.
Lene
L
Terslev
Technical University of Denmark, Lyngby, Denmark.
Jørgen Arendt
JA
Jensen
D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D006801:Humans; D012720:Severity of Illness Index; D018615:Ultrasonography, Doppler, Color / Q000379:methods*