1. Dysmenorrhea in adolescence;Heald;Pediatrics,1957
2. Dysmenorrhea during adolescence;Widholm;Acta obstet. gynec. scand.,1979
3. Epidemiology of adolescent dysmenorrhea;Klein;Pediatrics,1981
4. An epidemiological study of young women with dysmenorrhea;Andersch;Am. J. Obstet. Gynec.,1982
5. Dysmenorrhea and absenteeism;Svennerud;Acta obstet. gynec. scand.,1959