Akram Jamshidzadeh, and Negar Azarpira. “The Effects of Topical Sildenafil on Wound Healing in Rat: Attenuation of Thermal Hyperalgesia in Diabetes by Thespesia Populnea”. Iranian Journal of Pharmaceutical Sciences, vol. 7, no. 1, Jan. 2011, pp. 43-48, doi:10.22037/ijps.v7.41351.