N. Nandarathana, J. K. Ranjan, H. S. Asthana, and J. S. Yadav, “Comparative effectiveness of Satipaṭṭhāna-based thought purification therapy, mindfulness-based cognitive therapy and treatment as usual in patients with depressive disorders: study protocol for a three-arm parallel-group superiority randomized controlled trial”, Int J Clin Trials, vol. 13, no. 2, pp. 238–246, Apr. 2026.