Megawati Sinambela,
Faculty of Nursing, Institut Kesehatan Deli Husada, Deli Serdang, Indonesia,
Indonesia
Alfi Syahri,
Faculty of Nursing, Institut Kesehatan Deli Husada, Deli Serdang, Indonesia,
Indonesia
Rotua Sumihar Sitorus,
Faculty of Nursing, Institut Kesehatan Medistra Lubuk Pakam, Deli Serdang, Indonesia ,
Indonesia