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Ng SH, Ko SF, Toh CH, Chen YL.Ng SH, et al. Among authors: toh ch.Chang Gung Med J. 2006 Mar-Apr;29(2):119-29.Chang Gung Med J. 2006.PMID: 16767959Free article.Review.
Toh CH, Wong AM, Wei KC, Ng SH, Wong HF, Wan YL.Toh CH, et al.Neuroradiology. 2007 Jun;49(6):489-94. doi: 10.1007/s00234-007-0214-4. Epub 2007 Feb 20.Neuroradiology. 2007.PMID: 17310356