Jamil, Muhammad, et al. “ULTRASOUND GUIDED FOAM SCLEROTHERAPY AS A PREFERRED TREATMENT OPTION FOR VARICOSE VEINS IN TERMS OF SAFETY, EFFICACY AND COST EFFECTIVENESS”. Pakistan Armed Forces Medical Journal, vol. 71, no. 4, Aug. 2021, pp. 1332-35, doi:10.51253/pafmj.v71i4.4336.