Dr. Katti Ravi Kumar et al. 2023. Prevalence of Deep Vein Thrombosis in Postoperative Patients Using Risk Assessment Card: An Observational Study. International Journal of Pharma and Bio Sciences. 14, 3 (Sep. 2023), 25–35. DOI:https://doi.org/10.22376/ijpbs.2023.14.3.b25-35.