The antidepressant medication, or maternal use of other substances, isn't clear while the consensus of opinion is that it's due to the former Haddad et al 2005, Kallen 2004, Laine et al 2003, Rampono et al 2009, Sanz et al 2005, Zeskind Stephens 2004. A 2005 evaluation MosesKolko et al 2005 examined thirteen case reports and nine cohort research that identified maternal SSRI exposure and incorpo