Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kikumaro Aoki,Studies of the Urinary Excretion of Porphyrin and its Precursors in Infants and Children,Pediatrics International,1328-8067,Wiley,1968-06-01,10,,72-73,https://cir.nii.ac.jp/crid/1874242817684432256,https://doi.org/10.1111/j.1442-200x.1968.tb02676.x