RT Journal Article SR Electronic T1 Etanercept in breast milk. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1017 OP 1018 VO 31 IS 5 A1 Monika Ostensen A1 Gabriella Obrist Eigenmann YR 2004 UL http://www.jrheum.org/content/31/5/1017.abstract AB