| Saveez Saffarian , Harvard Medical School, University of Utah, Boston, MA, USA, Aug. 25 - Oct. 10, 2009 |
| Hugo Celso Perez Rojas , Instituto de Cibernetica, Matematica y Fisica (ICIMAF), Habana, Cuba, May 17 - June 1, 2009 |
| Ali Naji , University of California at Santa Barbara, Santa Barbara, USA, Jan. 31 - May 1, 2009 |
| Amirali Baniasadi , University of Victoria, Victoria, Canada, Sep. 1, 2008 - Sep. 1, 2009 |
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