| http://www.w3.org/ns/prov#value | - In those embodiments of the device where the elongate member is rigid, the longest cross-sectional dimension of the elongate portion, e.g. the diameter of the tubular section, typically is at least about 0.1 cm, usually at least about 0.3 cm and more usually at least about 0.4 cm, where the longest cross-sectional dimension may be as long as 2.5 cm or longer, but generally does not exceed about 2.
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