Clinical Observerships at Department of Pituitary and Hypothalamic Surgery. Toranomon Hospital, Tokyo., 1999
Clinical Observerships of Neuro-oncology, Department of Neurosurgery. Gui de Chauliac hospital, Montpellier., 2004
วุฒิบัตรผู้เชี่ยวชาญสาขาประสาทศัลยศาสตร์, 1995
Clinical Observerships at Center of cranial base surgery, Department of Neurological surgery. University of Pittsburgh medical center, Pittsburgh., 2003
Clinical Observerships at Department of Pituitary and Hypothalamic Surgery. Toranomon Hospital, Tokyo., 1999
Clinical Observerships of Neuro-oncology, Department of Neurosurgery. Gui de Chauliac hospital, Montpellier., 2004
วุฒิบัตรผู้เชี่ยวชาญสาขาประสาทศัลยศาสตร์, 1995
Clinical Observerships at Center of cranial base surgery, Department of Neurological surgery. University of Pittsburgh medical center, Pittsburgh., 2003