Baker, R., Bonner, P., Porter, J., Madhat, M., & Gross, J. (1969). Myoblast transfer therapy in the treatment of ptosis: a preliminary study. Journal of Pediatric Ophthalmology and Strabismus, 30(2), 113-7. https://doi.org/10.3928/0191-3913-19930301-12 (Original work published 1969)