Gustav Richard Heyer2026-03-222026-03-22192310.1097/00005053-192309000-00012https://doi.org/10.1097/00005053-192309000-00012https://andeanlibrary.org/handle/123456789/62614enPsychicSecretionPsychologyPsychoanalysisGastric secretionNeurosciencePsychic Influence Upon Gastric Secretion in Manarticle