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)