(1)
Khajavi, M.; Ahmady Roozbahany, N.; Shomali, S.; Hosseynrezai Mahani, M. Refractory Sinonasal Hemangiopericytoma: Rapid Recurrence or Growth of Residual Tumor. J Otorhinolaryngol Facial Plast Surg 2015, 1, pp. 21-24.