| Abbreviations | Meaning |
 | HWBW | Heart Weight To Body Weight [ratio] |
 | FHR | Familial Hypophosphatemic Rickets; Fetal Heart Rate |
 | DAH | Diffuse Alveolar Hemorrhage; Disordered Action Of The Heart |
 | WHT | Walsh-Hadamard Transform; Warm Heart Trial |
 | M1 | Mitral Component [first Heart Sound]; Mitral First [sound]; Myeloblast; Slight Dullness |
 | CEHC | Calf Embryonic Heart Cell; Cost-effective Healthcare |
 | PMHR | Predicted Maximum Heart Rate |
 | CHB | Chronic Hepatitis B; Complete Heart Block; Congenital Heart Block |
 | ESCAPE | Evaluation Study Of Congestive Heart Failure And Pulmonary Artery Catheterization Effectiveness |
 | HLT | Heart-lung Transplantation; High-L-leucine Transport; Human Lipotropin; Human Lymphocyte Transformation |
 | TAH | Total Abdominal Hysterectomy; Total Artificial Heart |
 | THR | Targeted Heart Rate; Threonine; Thyroid Hormone Receptor; Total Hip Replacement; Transhepatic Resistance |
 | NPHS | National Population Health Survey [Canada]; Northwick Park Heart Study |
 | MRC/BHF | Medical Research Council, British Heart Foundation Heart Protection Study |
 | CHOICES | Cancer, Heart Disease, Osteoporosis Interventions, And Community Evaluation Studies |