id	keyword
hls-11809	chocolate
hls-11809	pain
hls-11809	dysmenorrhea
hls-11809	dark
hls-11809	group
hls-11809	intensity
hls-11809	adolescents
hls-11809	study
hls-11809	control
hls-11809	research
hls-11809	intervention
hls-11809	days
hls-11809	test
hls-11809	pain intensity