I'm sorry for any confusion, but "postcards" is not a term that has a medical definition. It is a common item used for written correspondence and does not pertain to the field of medicine.

Communication between persons or between institutions or organizations by an exchange of letters. Its use in indexing and cataloging will generally figure in historical and biographical material.

The functions and activities carried out by the U.S. Postal Service, foreign postal services, and private postal services such as Federal Express.

Systems used to prompt or aid the memory. The systems can be computerized reminders, color coding, telephone calls, or devices such as letters and postcards.

An ancient civilization, known as early as 2000 B.C. The Persian Empire was founded by Cyrus the Great (550-529 B.C.) and for 200 years, from 550 to 331 B.C., the Persians ruled the ancient world from India to Egypt. The territory west of India was called Persis by the Greeks who later called the entire empire Persia. In 331 B.C. the Persian wars against the Greeks ended disastrously under the counterattacks by Alexander the Great. The name Persia in modern times for the modern country was changed to Iran in 1935. (From Webster's New Geographical Dictionary, 1988, p546 & Asimov, Words on the Map, 1962, p176)

The architecture, functional design, and construction of hospitals.

Behavior in which persons hurt or harm themselves without the motive of suicide or of sexual deviation.

Examination of the mouth and teeth toward the identification and diagnosis of intraoral disease or manifestation of non-oral conditions.

A condition or physical state produced by the ingestion, injection, inhalation of or exposure to a deleterious agent.

A state in southeastern Australia. Its capital is Sydney. It was discovered by Captain Cook in 1770 and first settled at Botany Bay by marines and convicts in 1788. It was named by Captain Cook who thought its coastline resembled that of South Wales. (From Webster's New Geographical Dictionary, 1988, p840 & Room, Brewer's Dictionary of Names, 1992, p377)

#### My apologies, but the term 'Washington' is not a medical concept or condition that has a defined meaning within the medical field. It refers to various concepts, primarily related to the U.S. state of Washington or the District of Columbia, where the nation's capital is located. If you have any questions about medical topics or conditions, please feel free to ask!

Method of making images on a sensitized surface by exposure to light or other radiant energy.

An instrument for reproducing sounds especially articulate speech at a distance. (Webster, 3rd ed)

The unsuccessful attempt to kill oneself.

Time period from 1901 through 2000 of the common era.

A plan for collecting and utilizing data so that desired information can be obtained with sufficient precision or so that an hypothesis can be tested properly.

The smallest continent and an independent country, comprising six states and two territories. Its capital is Canberra.

The return of a sign, symptom, or disease after a remission.