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Victor Trismanjaya Hulu
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Universitas Prima Indonesia
Indonesia
Sekolah Tinggi Ilmu Kesehatan Senior Medan
Suharni Pintamas Sinaga
https://scholar.google.com/citations?user=rh9YrKsAAAAJ&hl=id
Sekolah Tinggi Ilmu Kesehatan Senior Medan
Indonesia
Sekolah Tinggi Ilmu Kesehatan Senior Medan
Achmad Rifai
https://scholar.google.co.id/citations?user=6dQ3NXIAAAAJ&hl=id&oi=ao
Institut Kesehatan Helvetia Medan
Indonesia
Institut Kesehatan Helvetia Medan
Frans Judea Samosir
https://scholar.google.co.id/citations?user=KoZ2F08AAAAJ&hl=en
Universitas Prima Indonesia
Indonesia
Faculty of Public Health Universitas Prima Indonesia
Putranto Manalu
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Universitas Prima Indonesia
Indonesia
Faculty of Public Health Universitas Prima Indonesia
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