**Author contributions**

Vahid Raja had the idea for the research. The literature search was performed by Vahid Raja, Mohammad Sadegh Aboutalebi, and Rasool Nouri. The data analysis was performed by Marjan Mansourian and Khojaste Ghasemi. The article was drafted by Vahid Raja and Ziba Farajzadegan. The article was critically revised by Vahid Raja, Ziba Farajzadegan, and Fariborz Mokarian.

#### **Conflict of interest**

Not applicable.

### **Data availability**

The data used to support the findings of this study are available from the corresponding author upon request.

#### **Ethical statement**

Our study did not require an ethical board approval because it did not contain human or animal trials.
