author: Alfonso J. Rodríguez-Morales  Andrés Felipe Gil Restrepo  Jaime A. Cardona-Ospina  Juan E. Garcia-Robledo 

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copyrighted in countries with 90 years pma.

copyrighted in countries with longer than 90 years pma.

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copyrighted in countries with 15 years pma.

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copyrighted in countries with 85 years pma or shorter.

copyrighted in countries with 15 years pma or shorter.

copyrighted in countries with longer than 15 years pma.

copyrighted in countries with longer than 45 years pma.

copyrighted in countries with longer than 95 years pma.

copyrighted in countries with 74 years pma or shorter.

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copyrighted in countries with 60 years pma.

copyrighted in countries with 74 years pma.

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copyrighted in countries with 50 years copyright term after publication.

copyrighted in countries with 78 years pma.

copyrighted in countries with 95 years pma.