J. Reed, P. Salen, and P. Bagher. Journal of medical systems, 27 (3):
233-8(June 2003)6077<m:linebreak></m:linebreak>LR: 20071115; JID: 7806056; ppublish;.
K. Ramos, S. Schafer, and S. Tracz. BMJ (Clinical research ed.), 326 (7384):
319-21(February 2003)7220<m:linebreak></m:linebreak>LR: 20120306; JID: 8900488; OID: NLM: PMC143529; ppublish;<m:linebreak></m:linebreak>EBM; Formació.