A study can be constituted-of-or-filled-with (heart-attack survivors).Logical formLearned from1 sentences. A (heart-attack patient) may experience a panic.Logical formLearned from1 sentences. (Heart-attack victims) may undergo progress.Logical formLearned from1 sentences. Some percent can be constituted-of-or-filled-with (heart-attack patients).Logical formLearned from1 sentences.