R. C. Sanchez, B. S. Campomanes, and N. A. Aguilar, “Low Dose, Short-Term Oral Methylprednisolone for Nasal Polyps: A Randomized Double-Blind Placebo-Controlled Trial”, Philipp J Otolaryngol Head Neck Surg, vol. 21, no. 1-2, pp. 24–27, Nov. 2006.