Thankral, Anuj, et al. “Combined CT Pulmonary Angiography & Indirect CT Venography in Evaluation of Clinically Suspected Cases of Pulmonary Embolism- Our Experience in an Oncologic Setup”. Nepalese Journal of Radiology, vol. 3, no. 1, Oct. 2013, pp. 40-52, doi:10.3126/njr.v3i1.8795.