| Abbreviations | Meaning |
 | NHI | National Heart Institute; Nuclear Hepatobiliary Imaging |
| HRV | Heart Rate Variability; Human Reovirus; Human Rhinovirus; Human Rotavirus |
| AHA | American Heart Association |
| BHIRS | Brain-heart Infusion And Rabbit Serum |
| CLH | Chronic Lobular Hepatitis; Cleft Limb-heart [syndrome]; Corpus Luteum Hormone; Cutaneous Lymphoid Hyperplasia |
| NHLBITS | National Heart, Lung And Blood Institute Twin Study |
| FHS | Framingham Heart Study |
| MLCCHF | Multicenter Lisinopril Captopril Congestive Heart Failure [study] |
| HS | Heart Sounds |
| AHES | Artificial Heart Energy System |
| RHMV | Right Heart Mixing Volume |
| HHP | Honolulu Heart Program |
| SHHS | Scottish Heart Health Study; Sleep Heart Health Study |
| CHOICES | Cancer, Heart Disease, Osteoporosis Interventions, And Community Evaluation Studies |
| HTHD | Hypertensive Heart Disease |
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