By incorporating that belief into treatment, with particular attention to the spine, chiropractic care may be able to provide pain management for back pain patients using a variety of methods to achieve that goal.
US Presidents are elected by the Electoral College. However, there were six Presidents who served in office without being endorsed by popular vote. Gerald Ford was one of them; he became president after Richard Nixon resigned in 1974, and was not elected at the end of the term. The other part of the question is a trick. George Washington was never elected by popular vote, but he was elected by the Electoral College (like all Presidents) in 1789 and 1792.
Eisenhower was the last president born in the 19th century, and at age 62, was the oldest man elected President since James Buchanan in 1856 (President Truman stood at 64 in 1948 as the incumbent president, having succeeded to the Presidency in 1945 upon the death of Franklin Roosevelt).