L. Yu

Experimental replacement of the thoracic esophagus with a bioabsorbable collagen sponge scaffold supported by a silicone stent in dogs.

Tatsuo Nakamura, Y. Shimizu, T. Nakamura, 1999, ASAIO journal.

Long-term implantation test and tumorigenicity of polyvinyl alcohol hydrogel plates.

S. Hyon, Y. Shimizu, T. Nakamura, 2001, Journal of biomedical materials research.