2000i-089 alloys biocompatiblematerials biography bluffton congresses davis environmentalexposure equipmentandsupplies investigation medicalinstrumentsandapparatus metabolism murder murdervictims nellcrowley nickelalloys qt37s5292000 qv290i5791984p qv290n63181992 sarah shapememoryalloys southcarolina therapeuticuse titanium toxicity toxicology w3in182mj3rd1984p