A development of cardiac surgery may reduce (mortality rates) of surgeries to ranks.Logical formLearned from2 sentences. Some (lung cancer mortality) can be in a country.Logical formLearned from2 sentences. A (mortality rate) may pertain-to a female.Logical formLearned from2 sentences. Groups can be with (mortality risk).Logical formLearned from2 sentences. A significant difference can be in mortality.Logical formLearned from2 sentences. Mortality can be in a population.Logical formLearned from2 sentences. Areas may experience mortality.Logical formLearned from2 sentences. Mortality can be for (stem cell transplantation).Logical formLearned from2 sentences. (Mortality rates) may increase at a rate.Logical formLearned from2 sentences. Causes can be constituted-of-or-filled-with (sea otter mortality).Logical formLearned from2 sentences. (Pup mortality) can be high.Logical formLearned from2 sentences. Mortality can be from old age.Logical formLearned from2 sentences. Advantages may lead to mortality.Logical formLearned from2 sentences. A (mortality rate) can be among infants.Logical formLearned from2 sentences. Harvest can be mortality.Logical formLearned from2 sentences.