1. Certainly! Here are the references separated:
2. 1. Borlongan, C. V., Kaneko, Y., Maki, M., & Yu, S. J. (2019). The lead candidates for treating autism: conclusion and challenges ahead. J Stem Cell Res Ther, 4(1), 1-2.
3. 2. CDC (Centers for Disease Control and Prevention). (2020). Data and statistics on autism spectrum disorder. Retrieved from [CDC Autism Data](https://www.cdc.gov/ncbddd/autism/data.html)
4. 3. Knoppers, B. M., Sénécal, K., & Boissy, P. (2018). Stem cell therapy and autism: The question of clinical heterogeneity. Journal of law and the biosciences, 5(3), 669-682.
5. 4. Lee, E. S., Kang, S. K., Kim, J. H., Ra, J. C., & Kang, K. S. (2021). Embryonic stem cells and neuroregeneration. Stem Cell Reviews and Reports, 17(1), 72-88. [DOI: 10.59762/pb724290251120231110131204](https://doi.org/10.59762/pb724290251120231110131204)