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Buku Teks
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Buku Teks
Whitney, Ellie
Wadsworth and Cengage Learning, 2013
Buku Teks
Damanik, Indra Rukmana
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2012
UI - Skripsi Open
Truswell, Stewart A.
British Medical Journal, 1992
Buku Teks