TY - JOUR AU - Owens, D K; Lohr, K N; Atkins, D TI - AHRQ series paper 5: grading the strength of a body of evidence when comparing medical interventions--agency for healthcare research and quality and the effective health-care program JO - J Clin Epidemiol IS - 05 VL - 63 PY - 2010 DO - 10.1016/j.jclinepi.2009.03.009 L3 - PubMed-ID: 19595577 SP - 513 EP - 523 N1 - , et al. ER -