P.PONMATHI, SHALINI NAIR KRISHNAN, and V.P.R.SIVAKUMAR. 2018. “Correlation of Dysmenorrhea With Training Hours Among Ball Badminton Players”. International Journal of Pharma and Bio Sciences 9 (2):298-301. https://doi.org/10.22376/ijpbs.2018.9.2.b298-301.