/ Design Patterns. In software engineering, creational design patterns are design patterns that deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. The basic form of object creation could result in design problems or added complexity to the design.
1 Gastroenterologist-specializes in diseases of the digestive system. 2  Geriatrician (Geriatric Medicine) - general practice physician who specializes in caring for older adults. 3  Hematologist-a hematologist specializes in diseases of the blood and bone marrow. 4  Hepatologist-specializes in diseases of the liver.
Hematology is the study of blood in health and disease. It includes problems with the red blood cells, white blood cells, platelets, blood vessels, bone marrow, lymph nodes, spleen, and the proteins involved in bleeding and clotting (hemostasis and thrombosis).A hematologist is a medical doctor who applies this specialized knowledge to treat patients with blood conditions.Learn more about the types of diseases that hematologists study and treat, as well as the importance of having a hematologist as part of your health-care team.eople may be affected by many different types of blood conditions and blood cancers. Common blood disorders include anemia, bleeding disorders such as hemophilia, blood clots, and blood cancers such as leukemia, lymphoma, and myeloma.