“Efficacy of Pulsatilla Nigricans in Children With Acute Respiratory Infections (ARI) : A Retrospective Cohort Study”. Advancements in Homeopathic Research 4, no. 2 (August 26, 2022): 16–21. Accessed August 12, 2025. https://www.journals.acspublisher.com/index.php/ahr/article/view/1962.