Altman, D. G., & Bland, J. M. (1999). How to randomise. Bmj, 319 (7211), 703-704.

Anderson, K., Romero, R., Odibo, A.O., Rouse, D., Marsh, M., Acharya, G., Chitty, L., Ortmann, O., Geary, M., Gratacos, E. and Gallagher, P.G.  (2021). Quality criteria for randomized controlled studies: obstetrical journal guidelines. American journal of obstetrics & gynecology MFM, 3(3), p.100334.

Bhide, A., Shah, P. S., & Acharya, G. (2018). A simplified guide to randomized controlled trials. Acta obstetricia et gynecologica Scandinavica, 97(4), 380-387.

Concato, J., Shah, N., & Horwitz, R. I. (2000). Randomized, controlled trials, observational studies, and the hierarchy of research designs. New England journal of medicine, 342 (25), 1887-1892.

Dettori, J. (2010). The random allocation process: two things you need to know. Evidence-based spine-care journal, 1(03), 7-9.

Egbewale, B. E. (2014). Random allocation in controlled clinical trials: a review. Journal of Pharmacy & Pharmaceutical Sciences, 17 (2), 248-253.

Higgins, J.P., Altman, D.G., Gøtzsche, P.C., Jüni, P., Moher, D., Oxman, A.D., Savović, J., Schulz, K.F., Weeks, L. and Sterne, J.A. (2011). The Cochrane Collaboration’s tool for assessing risk of bias in randomised trials. Bmj, 343.

In, J. (2017). Introduction of a pilot study. Korean journal of anesthesiology, 70 (6), 601-605.

Kim, J., & Shin, W. (2014). How to do random allocation (randomization). Clinics in orthopedic surgery, 6 (1), 103-109.

Lim, C. Y., & In, J. (2019). Randomization in clinical studies. Korean Journal of Anesthesiology, 72 (3), 221-232.

Parker, M. J., Manan, A., & Duffett, M. (2012). Rapid, easy, and cheap randomization: prospective evaluation in a study cohort. Trials, 13 (1), 1-7.

Stanley, K. (2007). Design of randomized controlled trials. Circulation, 115 (9), 1164-1169.

Stolberg, H. O., Norman, G., & Trop, I. (2004). Randomized controlled trials. AJR Am J Roentgenol, 183 (6), 1539-44.