Authors and Year	Q1	Q2	Q3	Q4	Q5	Q6	Q7	Q8	Q9
Chan, M. F. and Zang, Y (2007)	√	√	√	√	√	√	√	√	√
Lipman, T. H, and Mahon, M. M. (1999)	√	√	√	√	√	√	√	√	No
Fisher, K. L (2006)	√	√	√	√	√	√	√	√	√
El-Deirawi, K.M and Zuraikat, N. (2001)	√	√	√	√	√	√	√	√	No
Speight, J. and Bradley C. (2001)	√	√	√	√	√	√	√	√	No
Joshi, A., Komlodi, A., and Arora, M. (2008)	√	√	√	√	√	√	√	√	√
Derr R., Sivanandy M., Bronich-Hall L., and Rondriguez A. (2007)	√	√	√	√	√	√	√	√	√
Nash M. (2009)	√	√	√	√	√	√	√	√	√
Shiu, A. and Wong, R. (2011)	√	√	√	√	√	√	√	√	√
Findlow, L. and McDowell, J. (2002)	√	√	√	√	√	√	√	√	No
Kenealy, T., Arroll, B., Kenealy, H, Docherty, B., Scott, D., Scragg, R., and Simmons, D. (2004)	√	√	√	√	√	√	√	√	√
James J., Gosden C., Winocour P., Walton C., Nagi D., Turner B., Williams R., and Holt RI. (2009)	√	√	√	√	√	√	√	√	√
Carey, N. and Courtenay, M. (2008)	√	√	√	√	√	√	√	√	√
Chinnasamy E., Mandal A., Khan S., Iqbal F., and Patel N. (2011)	√	√	√	√	√	√	√	√	√
Ndebu, J. and Jones, C. (2018)	√	√	√	√	√	√	√	√	√
Modic, M. B., Vanderbilt, A., Siedlecki, S. L, Sauvey R., Kaser N., and Yager C., (2014)	√	√	√	√	√	√	√	√	√
Roopnarinesingh, N, Brennan, N., Khan, C., Ladenson, PW, and Hill-Briggs, F. (2015)	√	√	√	√	√	√	√	√	√