id	domain	url
essd-838	www.press.ierek.com	http://www.press.ierek.com
essd-838	creativecommons.org	https://creativecommons.org/licenses/by/4.0/)
essd-838	www.press.ierek.com	http://www.press.ierek.com
essd-838	creativecommons.org	https://creativecommons.org/licenses/by/4.0
essd-838	crossmark.crossref.org	https://crossmark.crossref.org/dialog/?doi=10.21625/essd.v6i2.838&domain=press.ierek.com
essd-838	bmcpregnancychildbirth.biomedcentral.com	https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-017-1443-0
essd-838	bmcpregnancychildbirth.biomedcentral.com	https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-017-1443-0
essd-838	bmcpregnancychildbirth.biomedcentral.com	https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-017-1443-0
essd-838	doi.org	https://doi.org/10.1186/s12884017-1443-0
essd-838	dx.doi.org	http://dx.doi.org/10.19044/esj.2017.v13n5p238
essd-838	doi.org	https://doi.org/10.1186/s12884-017-1443-0
essd-838	doi.org	https://doi.org/10.1186/s12884-017-1443-0
essd-838	dx.doi.org	http://dx.doi.org/10.19044/esj.2017.v13n5p238