Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) BARKAN AL,"Ghrelin secretion in humans is sexually dimorphic, suppressed by somatostatin, and not affected by the ambient growth hormone levels",J Clin Endocrinol Metab,,,2003,84,,3490-3497,https://cir.nii.ac.jp/crid/1570572700008447488,