Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) LUNDBERG JM,Coexistence of peptide HI (PHI) and VIP in nerves regulating blood flow and bronchial smooth muscle tone in various mammals including man,Peptides,,,1984,5,,893-606,https://cir.nii.ac.jp/crid/1570291224441388544,