@incollection{Baerwald12,
author = {Susette Unger and Christoph Baerwald},
title = {Pain in Rheumatic Diseases},
booktitle = {Insights and Perspectives in Rheumatology},
publisher = {IntechOpen},
address = {Rijeka},
year = {2012},
editor = {Andrew Harrsion},
chapter = {13},
doi = {10.5772/28611},
url = {https://doi.org/10.5772/28611}
}