www.tchin.org/pdheart.htm
www.execpc.com/~kdswhrt/kwhhome
www.childrensheart.org/
www.littleheartsonthemend.org
www.heartofachild.org
www.babyheartspress.com
www.tchin.org
www.bharatonline.com/heart/htcod2.html
www.csun.edu/~hcmth011/heart/
sln2.fi.edu/biosci/heart.html
execpc.com/~markc/congenit.html
www.unich.it/percar/main.html
www.webring.org/cgi-bin/webring?ring=littlehearts&list
www.americanheart.org/children/index.html
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