Efficacy of Arsenicum Album 30C in Prevention of COVID-19 in Individuals Residing in Containment Areas – A Prospective, Multicentre, Cluster-Randomized, Parallel Arm, Community-Based, Open-Label Study - Nayak, Debadatta; Karthikeyan, D.; Pal, Partha Pratim; Ponnam, Hima Bindu; Shastri, Vipul; Bawaskar, Ramesh; Chinta, Raveendar; Varanasi, Roja; Chaudhary, Anupriya; Khurana, Anil (Homeopathy, 2024)