1. Time trend analysis of unconjugated estriol concentrations in third trimester pregnancy utilizing a sample averaging collection procedure;Buster;Obstet. Gynecol.,1980
2. An algorithm for determining gestational age from unconjugated estriol levels;Buster;Obstet. Gynecol.,1980
3. Time trend analysis of unconjugated estriol (E3) in third trimester pregnancy utilizing a sample averaging procedure;Tataryn,1979
4. Serum unconjugated estriol levels in the third trimester and their relationship to gestational age;Buster;Am. J. Obstet. Gynecol.,1976
5. Comparison between four radioimmunoassays for plasma estriol;Abraham;Analyt. Lett.,1974