Malla, A.; Pathak, J.; Shrestha, S.; Pant, A.; Shrivastava, T.; Amatya, S. M.; Joshi, S. K. A Study on Parental Age, Pregnancy Events and Autism Spectrum Disorders. J. Kathmandu Med. Coll. 2017, 6 (1), 14-21. https://doi.org/10.3126/jkmc.v6i1.18581.