1) MEDLINE
http://www.ncbi.nlm.nih.gov/pubmed/

2) SCIELO ELECTRONIC LIBRARY ONLINE http://www.scielo.org/php/index.php?lang=es

3) ARTHRITIS & RHEUMATISM
http://www.rheumatology.org/publications/ar/index.asp?aud=mem

4) ANNALS of the RHEUMATIC DISEASES
http://ard.bmj.com/

5) RHEUMATOLOGY
http://rheumatology.oxfordjournals.org/

6) ARTHRITIS RESEARCH & THERAPY
http://arthritis-research.com/

7) The journal of RHEUMATOLOGY
http://jrheum.org/

8) LUPUS
http://lup.sagepub.com/current.dtl

9) REUMATOLOGIA CLINICA
http://arthritis-research.com/

10) REVISTA BRASILEIRA DE REUMATOLOGIA
http://www.scielo.br/scielo.php?script=sci_serial&pid=0482-5004&nrm=iso&rep=&lng=es