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.
Five presidents took office without winning the popular vote. In other words, they did not receive a plurality in terms of the popular vote. They were elected, instead, by the electoral college or in the case of John Quincy Adams by the House of Representatives after a tie in the electoral votes. George W. Bush who lost by 543,816 votes to Al Gore in the 2000 election.