怀孕间隔35个月，二胎患有自闭症概率更低？(5)

9.Conde-Agudelo, A., Rosas-Bermudez, A. & Norton, M. H. Birth spacing and risk of autism and other neurodevelopmental disabilities: a systematic review. Pediatrics 137, e20153482 (2016).
10.Maureen S. Durkin；Lindsay Allerton；and Matthew J. Maenner. Inter-Pregnancy Intervals and the Risk of Autism Spectrum Disorder: Results of a Population-Based Study. J Autism Dev Disord. 2015, 45(7): 2056–2066. doi:10.1007/s10803-015-2368-y.
11.小丫丫自闭症公众号：叶酸，自闭症的天使还是魔鬼？2016. https://mp.weixin.qq.com/s/XZt2fxljWa6rWyfVd_nE6g
12.小丫丫自闭症公众号：自闭症的遗传——是爸爸的错，还是妈妈的不对. https://mp.weixin.qq.com/s/l-jjqoPpPc_86ILgpiBl0g
13.https://en.wikipedia.org/wiki/Birth_spacing
14.https://www.rcog.org.uk/en/news/bjog-press-release/
15.https://www.webmd.com/baby/news/20160407/short-gap-between-pregnancies-tied-to-higher-autism-risk#2
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