Measuring worker productivity: frameworks and measures.
Beaton D, Bombardier C, Escorpizo R, Zhang W, Lacaille D, Boonen A, Osborne RH, Anis AH, Strand CV, Tugwell PS.
Beaton D, et al. Among authors: boonen a.
J Rheumatol. 2009 Sep;36(9):2100-9. doi: 10.3899/jrheum.090366.
J Rheumatol. 2009.
PMID: 19738221
Review.