Elvi Lastriani, R. Rudi Alhempi, Irma Salamah,. “Effect of Positive Thinking on Covid-19 Patient Healing”. Annals of the Romanian Society for Cell Biology 25, no. 6 (May 30, 2021): 5546–5554. Accessed April 26, 2024. https://annalsofrscb.ro/index.php/journal/article/view/6573.