Population differences in tear duct size. Implications of relaxed selection.
D000354:Africa, Western; D044466:Asian People; D044383:Black People; D002508:Cephalometry; D002681:China; D004534:Egypt; D005060:Europe; D005260:Female; D006254:Hawaii; D006801:Humans; D007198:Indians, North American; D007199:Indians, South American; D004930:Inuit; D007765:Lacrimal Apparatus / Q000033:anatomy & histology*; D008297:Male; D008542:Melanesia; D044468:Native Hawaiian or Pacific Islander; D010161:Paleodontology; D044469:Racial Groups; D014481:United States; D044465:White People; D001741:Black or African American