Confounding by indication probably distorts the relationship between steroid use and cardiovascular disease in rheumatoid arthritis: results from a prospective cohort study.
PLoS One. 2014 Jan 30;9(1):e87965. doi: 10.1371/journal.pone.0087965. eCollection 2014.
PLoS One. 2014.
PMID: 24498229
Free PMC article.