Titut Harnanik1,2,*, Ketut Edy Sudiarta1, Rudi Pandapotan Napitupulu1, Arif Rahman Nurdianto1, Ni Ketut Alit Darmayanti1
1Department of Marine Health, Faculty of Medicine, Hang Tuah University, Surabaya, INDONESIA.
2Naval Health Institute Drs. Med. R. Rijadi S, Phys., Surabaya, INDONESIA.