Ma, F., Wang, C., Yoder, W., Westlund, K., Carlson, C., Miller, C., & Danaher, R. (1969). Efficacy of Herpes Simplex Virus Vector Encoding the Human Preproenkephalin Gene for Treatment of Facial Pain in Mice. Journal of Oral & Facial Pain and Headache, 30(1), 42-50. https://doi.org/10.11607/ofph.1512 (Original work published 1969)