Final answer:
A specialist who treats diseases of the stomach and intestines is a gastroenterologist, not a cardiologist, endocrinologist, or pediatrician, which specialize in heart diseases, endocrine disorders, and child health respectively.
Step-by-step explanation:
A specialist in treating diseases of the stomach and intestines is a gastroenterologist. However, it may be useful to understand the other options given. A cardiologist is a medical doctor that specializes in the diagnosis and treatment of diseases of the heart. An endocrinologist is a medical doctor who specializes in treating disorders of the endocrine glands and hormone systems, such as diabetes mellitus, thyroid diseases, and others. Finally, a pediatrician focuses on health care for infants, children, and adolescents, including general health and developmental issues.
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