The diversity of earmold specifications and nomenclature used by the manufacturers often makes it confusing and difficult to obtain an earmold with the characteristics necessary for the amplifying system. Eight earmold manufacturers were surveyed to determine whether or not they were in compliance with standard nomenclature proposed by the National Association of Earmold Manufacturers in 1970. The results show that the manufacturers do not appear to be following the NAEL proposal. A recommendation for the possible solution of the problem is presented.
Circbank: a comprehensive database for circRNA with standard nomenclature
