PT - JOURNAL ARTICLE AU - ANDRAS PERL TI - Dr. Perl replies AID - 10.3899/jrheum.100908 DP - 2011 Jun 01 TA - The Journal of Rheumatology PG - 1217--1217 VI - 38 IP - 6 4099 - http://www.jrheum.org/content/38/6/1217.short 4100 - http://www.jrheum.org/content/38/6/1217.full SO - J Rheumatol2011 Jun 01; 38