Category 1
Category 2
Category 3
Category 4
Category 5
100

The study of skin and skin diseases

dermatology

100

Branch of medicine dealing with children and their diseases

pediatrics

100

Study of the female reproductive system and its diseases

gynecology

100

The study of cancers

oncology

100

study of the nervous system in health and disease

neurology

200

study of the structure and function of tissues

histology

200

The study of factors that contribute to determining the distribution and frequency of health-related conditions within a defined human population

epidemiology

200

study of newborns and the treatment of their diseases

neonatology

200

The study of the stomach and intestines, as well as their diseases

gastroenterology

200

study of blood and blood diseases

hematology

500

study of X-rays and radioactive substances, as well as their uses in diagnosing and treating diseases

radiology

500

branch of medicine dealing with pregnancy and childbirth

obstetrics

500

study of poisonous substances and their effects on physiolgy 

toxicology

500

branch of medicine dealing with the urinary and male reproductive systems and their diseases

urology

500

the study of the ear, throat, larynx, and their diseases

otolaryngology