Name Info Provider Link
free resource HighWire http://fn.bmj.com/cgi/pmidlookup?view=long&pmid=12496231
Childbirth free resource MedlinePlus Health Information https://medlineplus.gov/childbirth.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=12496231.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/12496231/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/12496231