Parwati, N. M. ., I. N. M. . Karmaya, and D. P. . Sutjana. “Group Breathing-Based Exercise to Improve Cardiopulmonory Fitness of Aged Care Patients in Werdha Wana Seraya Denpasar”. Public Health and Preventive Medicine Archive, vol. 1, no. 1, July 2013, pp. 24-28, doi:10.53638/phpma.2013.v1.i1.p06.