| http://www.w3.org/ns/prov#value | - The method of claim 1, wherein said compound is a compound of formula: ##STR13## wherein J is an organic or inorganic moiety, M+x is a pharmaceutically acceptable cation, where x is the valence of the cation, a is 1 or 2, and b and c are the smallest integers that result in a neutral compound.
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