Nurse practitioners are registered nurses with additional education, advanced knowledge and nursing experience, and a specialty of practice. They provide a range of health services to patients and deliver preventive and continuous care toward the management of patients' health. Nurse practitioners work in conjunction with physicians and collaboratively with other nursing colleagues and health-care providers, or they may work independently. They are employed in community health centres, hospitals, clinics, long-term care facilities, and rehabilitation centres. Nurse practitioners may specialize in primary healthcare or acute care.