著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Tim Olds and Sarah Blunden and John Petkov and Fabricio Forchino,"The relationships between sex, age, geography and time in bed in adolescents: A meta-analysis of data from 23 countries",Sleep Medicine Reviews,1087-0792,Elsevier BV,2010-12,14,6,371-378,https://cir.nii.ac.jp/crid/1360011144992748672,https://doi.org/10.1016/j.smrv.2009.12.002