A brother may have emphysema.Logical formLearned from1 sentences. Some degree can be constituted-of-or-filled-with emphysema.Logical formLearned from1 sentences. Ones may suffer with emphysema.Logical formLearned from1 sentences. A (laser procedure) may help (emphysema patients).Logical formLearned from1 sentences. (Volume reduction surgery) may be targeted at emphysema.Logical formLearned from1 sentences. (Emphysema victims) can be part of an experiment.Logical formLearned from1 sentences. Surgeries can be for emphysema.Logical formLearned from1 sentences. Emphysema may be caused by (cigarette smoking).Logical formLearned from1 sentences. Emphysema may be caused in some cases by years of smoking.Logical formLearned from1 sentences. (Smoking tobacco) may lead to emphysema.Logical formLearned from1 sentences. An enzyme may be used in a treatment of emphysema.Logical formLearned from1 sentences. Lungs may be bring_abouted by emphysema.Logical formLearned from1 sentences. Emphysema may develop into difficulty.Logical formLearned from1 sentences. A pulmonary emphysema can be generalized.Logical formLearned from1 sentences.