Article 14 describes the process of combining periods of U.S. and Swiss coverage to determine eligibility for Swiss totalization benefits under the ordinary disability insurance pension program.  It stipulates that where a person has completed at least 1 year of Swiss ordinary disability insurance pension coverage, Switzerland will add U.S. quarters of coverage to the person's Swiss coverage in determining whether the person meets the minimum requirements for ordinary disability benefits.  This 1-year coverage requirement is similar to the U.S. 6 quarters of coverage requirement in Article 18.1.  Switzerland will not count quarters of coverage that coincide with periods of coverage already credited under Swiss laws.