1.
Datta L- ellin. Why an Active Control Group Makes a Difference and What to Do About It. J Multidiscip Eval [Internet]. 2007 Jul. 18 [cited 2026 May 5];4(7):1-12. Available from: https://jmde.journals.publicknowledgeproject.org/index.php/jmde_1/article/view/5