Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fukuda Yasuo,Affirmative Duty of Life Insurance Companies to investigate Survival of the Insured,Hokengakuzasshi (JOURNAL of INSURANCE SCIENCE),03872939,The Japanese Society of Insurance Science,2015,2015,630,630_291-630_311,https://cir.nii.ac.jp/crid/1390001205164475008,https://doi.org/10.5609/jsis.2015.630_291