Variables affecting the precision of assay of estrogens.
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PUGSLEY
D001681:Biological Assay; D003271:Contraceptive Agents, Female; D045166:Estradiol Congeners; D004967:Estrogens; D005260:Female; D006801:Humans; D012015:Reference Standards
D003271:Contraceptive Agents, Female; D045166:Estradiol Congeners; D004967:Estrogens