Yani Sri Ningsih
(1), Chrismis Novalinda Ginting
(2), Sri Lestari Ramadhani Nasution
(3), Mangatas Silaen
(4), Putranto Manalu
(5)
(1)
Public Health Office Medan City, Indonesia,
(2)
Prima Indonesia University, Indonesia,
(3)
Prima Indonesia University, Indonesia,
(4)
Prima Indonesia University, Indonesia,
(5)
Prima Indonesia University, Indonesia