by Sigmund, Geoffrey A, Oppenheimer, Randy
Published in Ear, nose, & throat journal (01.01.2012)

by Sigmund, Geoffrey A, Tong, Karen A., MD, Nickerson, Joshua P., MD, Wall, Christopher J., MD, Oyoyo, Udo, Ashwal, Stephen, MD
Published in Pediatric neurology (01.04.2007)

by Sigmund, Geoffrey A, Oppenheimer, Randy
Published in Ear, nose, & throat journal (01.01.2012)

by Heasley, Victor L., Ramirez, Ashley M., Baker, Peter E., Boerneke, Jeffrey L., DeBoard, Ryan H., Hartge, Torie L., Madrid, Dennis C., Sigmund, Geoffrey A., Shellhamer, Dale F.
Published in ChemInform (26.02.2008)