NewYorkUniversityMedicalCenter広畑優1995.6.1-1995.11.30AlleghenyNeuroscienceInstitute落合智1996.1.1-1996.3.20TheUniversityofTexasHoustonHealthScienceCenter大倉章生1998.9.14-1999.2.28TheUniversityofTexasHoustonHealthScienceCenter森本一弥2000.1.1-2000.3.31ArthurandSoniaLabattBra