http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VBF-4508R2M-5&_coverDate=12%2F31%2F2002&_alid=65106729&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=5925&_sort=d&wchp=dGLbVtb-lSzBk&_acct=C000049824&_version=1&_urlVersion=0&_userid=984616&md5=56aabd18dae52c3570f31d8a928bfde1

It presents an article on a study about birth intervals and infant mortality (neonatal, early post neonatal and late post-neonatal toddler).