/ 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 and blood diseases and disorders.  A specialist in this field is a hematologist. The study of blood is called hematology. It is derived from â¦ the  Greek word Hema, which is blood and the Latin word ology, which  means study of. + 17 others found this useful.