Nursing focusses on providing medical and personal assistance to the individuals, families, and communities affected physically or psychologically. Nursing research deals with evidence supporting nursing practices. Traditionally, nurses used to work under the supervision of physicians. In the current changing scenario, the specialty of nursing has diversified to include nurse practitioners, nurse case managers, Intensive care unit registered nurses, Home care registered nurse, and Travel registered nurses, who specialize in certain fields of medicine and are allowed to practice independently.