Sundararajan S, Afle GM. Reliability and validity of low cost pressure gauge manometer for measurement of respiratory muscle strength in healthy children: a cross-sectional study. Int J Community Med Public Health [Internet]. 2023 Aug. 28 [cited 2025 Oct. 27];10(9):3127-31. Available from: https://www.ijcmph.com/index.php/ijcmph/article/view/11629