1. The Hsu's arguments are not general.
2. The equations are strict & I can take one from any desired pub to any desired hell.

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MM, do you have any idea of the magnitude of the total energy required to perform a traversal of this hypothetical wormhole?
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Yes, I've generalized Peter Kuhfittig's efforts; for example, see this abstract:

P. K. F. Kuhfittig, "Can a wormhole supported by only small amounts of exotic matter really be traversable?", Phys. Rev. D68, 067502 (2003).
http://arxiv.org/abs/gr-qc/0401048