Medical care is shared between the medical profession (physicians
or doctors) and other professionals such as nurses and pharmacists,
sometimes known as allied health professionals. Historically,
only those with a medical doctorate have been considered to practice
medicine. Clinicians (licensed professionals who deal with patients)
can be physicians, nurses, therapists or others. The medical profession
is the social and occupational structure of the group of people
formally trained and authorized to apply medical knowledge. Many
countries and legal jurisdictions have legal limitations on who
may practice medicine.
Medicine comprises various specialized sub-branches, such as
cardiology, pulmonology, neurology, or other fields such as
sports medicine, research or public health.
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