[The changing pattern of cholelithiasis in Tianjin].
Y Q
YQ
Huang
C
C
Gu
D001649:Bile Duct Diseases / Q000453:epidemiology; D001654:Bile Pigments / Q000032:analysis; D002681:China; D002769:Cholelithiasis / Q000032:analysis / Q000453:epidemiology*; D002784:Cholesterol / Q000032:analysis; D005260:Female; D042882:Gallstones / Q000453:epidemiology; D006801:Humans; D008297:Male; D012737:Sex Factors
D001654:Bile Pigments; D002784:Cholesterol