Sadeghian, H., and R. Motiei-Langroudi. “Pitting Oedema in a Patient With Lumbar Disc Herniation: Case Report of an Unusual Association”. Sultan Qaboos University Medical Journal, vol. 17, no. 4, Jan. 2018, pp. 464-7, doi:10.18295/squmj.2017.17.04.015.