Hubungan antara perilaku caring perawat dengan tingkat kecemasan, tingkat stres, dan strategi koping keluarga (primary caregiver) yang anggota keluarganya dirawat di instalasi gawat darurat = The corelation between nurse caring behaviors and the level anxiety stress and family coping strategies primary caregiver whos the members of their families treated in emergency unit / Muhamad Irfanudin