@article {239766,
	title = {Age at Menarche: 50 Year Socioeconomic Trends in Phenotypic Differentials Among US-Born Black and White Women, 1959-2008},
	journal = {American Journal of Public Health},
	year = {2015},
	author = {Kreiger, Nancy and Matthew V. Kiang and Anna Kosheleva and Pamela D. Waterman and Jarvis T. Chen and Jason Beckfield}
}
