Review of Hepatitis B Vaccination in Children of Workers of an Oil & Gas Industry in Lho'seumawe and Lho'sukon, North Aceh von Harahap, Chairul Adillah, Harahap, Sari Leyli, Lubis, Chairuddin P., Judin, Ahmad

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Association between Acid-Base Balance and Asphyxia in Newborn Infants von Harahap, Sari Leyli, Harahap, Chairul Adillah, Sulastri, Sri, Yoel, Chairul, Raid, Noersida

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Parents' Knowledge on Diarrhea in a Plantation Area von Arizal, Arizal, Antoni, Ali, Harahap, Sari Leyli, Sinuhaji, Atan Baas, Sutanto, A. H.

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