| Abbreviations | Meaning |
 | CLH | Chronic Lobular Hepatitis; Cleft Limb-heart [syndrome]; Corpus Luteum Hormone; Cutaneous Lymphoid Hyperplasia |
| CONGHD | Congenital Heart Disease |
| BRH | Benign Recurrent Hematuria; British Regional Heart [study]; Bureau Of Radiological Health |
| AVHS | Acquired Valvular Heart Syndrome |
| INA | Sodium Current [heart Electrical Activity] |
| AHA | Anti-heart Antibody; Antihistone Antibody; Area Health Authority; Arthritis-hives-angioedema [syndrome]; Aspartyl-hydroxamic Acid; Autoimmune Hemolytic Anemia |
| HRMAX | Maximal Heart Rate |
| CCF | Congestive Heart Failure |
| IK-ACH | Acetylcholine-induced Potassium Current [heart Electrophysiology] |
| FHR | Fetal Heart Rate |
| WHAT | Worcester Heart Attack Trial |
| MISCHF | Management To Improve Survival In Congestive Heart Failure |
| NHI | National Heart Institute; Nuclear Hepatobiliary Imaging |
| CHD | Cyanotic Heart Disease |
| HRRI | Heart Rate Retardation Index |
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