Abstract
Unfortunately, the original version of the article [1] contained an error. A typo in the main equation (Eq. 1) has been introduced during the production process. The operator “ = ” in Eq. 1 “log(θik) = α + ui…” was missing.
Publisher
Springer Science and Business Media LLC
Subject
Public Health, Environmental and Occupational Health,General Business, Management and Accounting,General Computer Science