Tretinoin Nanogel 0.025% Versus Conventional Gel 0.025% in Patients with Acne Vulgaris: A Randomized, Active Controlled, Multicentre, Parallel Group, Phase IV Clinical Trial oleh B S Chandrashekhar, M. Anitha, Mukesh Ruparelia, Pradyumna Vaidya, Riyaz Aamir, Sunil Shah, S Thilak, Sanjeev Aurangabadkar, Sandeep Pal, Abir Saraswat, Jayesh J Sanmukhani