RT Journal Article SR Electronic T1 What dose of folic acid to use with methotrexate in rheumatoid arthritis? JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 103 OP 106 DO 10.1136/dtb.2020.000061 VO 59 IS 7 A1 Diane Bramley YR 2021 UL http://dtb.bmj.com/content/59/7/103.abstract AB