RELATIONSHIP BETWEEN CHARACTERISTIC OF TEENAGE GIRLS WITH PRIMARY DISMENOREA INCIDENCE FEMALE STUDENTS IN GRADE X AND GRADE XI AT SENIOR HIGH SCHOOL 1 PADANG CITY IN 2017
RELATIONSHIP BETWEEN CHARACTERISTIC OF TEENAGE GIRLS WITH PRIMARY DISMENOREA INCIDENCE FEMALE STUDENTS IN GRADE X AND GRADE XI AT SENIOR HIGH SCHOOL 1 PADANG CITY IN 2017