Http://: http://www.ncbi.nlm.nih.gov/pubmed/9144284 |
ISBN: 0-683-40008-8 |
Http://: http://en.wikipedia.org/wiki/Umbilical_cord |
Http://: http://www.ncbi.nlm.nih.gov/pubmed/9144284 |
ISBN: 0-683-40008-8 |
Http://: http://en.wikipedia.org/wiki/Umbilical_cord |