@misc{oai:niigata-u.repo.nii.ac.jp:00004571, author = {押木, 利英子}, month = {Mar}, note = {新潟大学, 平成17年3月23日, 新大院博(医)第61号, 新大院博(医)甲第61号}, title = {Factors Affecting Short-Term Mortality in Very Low Birth Weight Infants in Japan}, year = {2005} }