Growth and Development Timeline
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Wurde aktualisiert: 7 Dez 2017
“Fetal Development: What Happens during the 1st Trimester?” Mayo Clinic, Mayo Foundation for Medical Education and Research, 12 July 2017, www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/prenatal-care/art-20045302?pg=2.
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