Sudhya P, Chellamma V K, Heera ShenoyT, and Jensy Chembakassery. “Analysis of Labour Using Modified WHO Partograph in Primigravida in a Tertiary Care Centre of North Kerala”. International Journal of Health and Clinical Research, vol. 4, no. 16, Sept. 2021, pp. 127-31, https://ijhcr.com/index.php/ijhcr/article/view/2617.