N. A. Mohamed, M. H. Mohamed Ridzuwan, N. A. E. Ungah, and T. Z. M. T. Jamaluddin, “Effects of ‘Bacterfree Hand Intervention’ on the knowledge, attitude of handwashing and its technique, among pre-schoolers in Wilayah Persekutuan, Malaysia”., Bangladesh J Med Sci, vol. 17, no. 1, pp. 67–70, Jan. 2018.