Wintoko, Risal. 2014. “Relations Aspects of Personal Hygiene And Behavior Aspects With Worm Eggs Nail Contamination Risk At 4th , 5th And 6th Grade of State Elementary School 2 Raja Basa Districts Bandar Lampung Academic Year 2012/2013”. JUKE Unila 4 (07). http://juke.kedokteran.unila.ac.id/index.php/juke/article/view/400.