Singh, V., Rana, R. K., & Singhal, R. (2011). Application of Cluster Sampling Techniques for Analyzing the Effect of Dhatri Lauha – An Ayurvedic Formulation in Iron Deficiency Anaemia. International Journal of Ayurvedic Medicine, 2(2). https://doi.org/10.47552/ijam.v2i2.70