Atrial Natriuretic Peptide: Morphology and Physiology.- Atrial Natriuretic Peptide: Pathophysiological and Clinical Relevance.- The Heart as a Target Organ.- Short Communications ANP: Experimental Studies.- ANP in Healthy Volunteers.- ANP and Cardiac Diseases.- ANP and the Kidney.- ANP and Pregnancy.- ANP and Ca-Antagonists.- The Heart in Acromegaly.- Thyroid Hormones and the Heart.- Sympathetic Activity and the Heart.- The Heart in Various Endocrine Systems.