Heleno Almeida Junior. “Can the Godelieve Denys-Struyf (GDS) Muscle and Articulation Chains Method Help in the Treatment of Hyperventilation?”. Global Journal of Medical Research, vol. 19, no. K6, Mar. 2019, pp. 1-4, https://medicalresearchjournal.org/index.php/GJMR/article/view/1843.