A Systematic Review on Effectiveness of Rajyoga Meditation on Chronic Tension Type Headache. Journal of Pharmaceutical Negative Results, [S. l.], p. 1622–1628, 2022. DOI: 10.47750/pnr.2022.13.S01.193. Disponível em: https://pnrjournal.com/index.php/home/article/view/1199.. Acesso em: 8 jun. 2026.