title: Inter-labortory variations in urinary oestriol estimates.
mesh_terms: D019411:Clinical Laboratory Techniques; D003124:Colorimetry; D004964:Estriol / Q000592:standards / Q000652:urine*; D005019:Ethyl Ethers; D005260:Female; D005470:Fluorometry; D006801:Humans; D006868:Hydrolysis; D008722:Methods; D009520:New Zealand; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D011786:Quality Control
chemical_list: D005019:Ethyl Ethers; D004964:Estriol