And it gets even better: the name "hospital" derives from "Hospitalers," an actual Christian Order of Chivalry (Knighthood) dating back to the Middle Ages, notably the Crusades. The Hospitalers would serve God by assisting in the healing of the injured. They did so by praying for the sick and anointing them with oil. The word "hospital" came to mean any place that cares for the sick. Today, many hospitals around the world are still called "Hospitals of St. Mary" or "Hospitals of Our Lady." Even some hospitals that are not specifically named after Mary exist within their boundaries. One example is New York-Presbyterian/Columbia University Medical Center, which includes two hospitals in Manhattan and one in Harlem. However, most hospitals only have one facility under their name, although they may have other locations where medical practices occur. For example, Massachusetts General Hospital has six other sites across the state where clinical trials are conducted. It isn't just in the United States where churches continue to lend their names to hospitals. In Canada, the Church of England's King's College London and the Roman Catholic Church's Notre Dame de Montreal are examples of this practice. In India, there are more than 100 hospitals named after Jesus Christ. The reason for this tradition is simple.