The authors apologize for any potential confusion caused by the use of the phrases “low-income nations”, “high pay nations”, and “centre pay nations” in the original article.
The phrases were employed to characterize nations based on gross national income level classifications used by the World Bank.
To improve the article, the authors correct the phrases “low-income nations”, “high pay nations”, and “centre pay nations” in line 8 and 9, section 1.0 to the well-recognized terms “low-income countries”, “high-income countries”, and “middle-income countries”.
The authors would like to make apologies for any inconvenience caused.