Patient Safety in Medication Nomenclature: Orthographic and Semantic Properties of International Nonproprietary Names.

PLoS One · 2015 · PMC4689353 · PMID 26701761

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a clear trendno p-value reported

There is a clear trend towards stricter compliance with WHO principles after 1960, as most of the extemely long names (20 characters or more) or those with prohibited (di)graphs were designated in the 1950s.

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