Using panel cointegration techniques in cross country regressions

[alexander wais]

I am looking to assess inequality's impact on growth. I am using panel data consisting of approximately 25 years in 60 countries and will be including inequality and two controls as regressors. I am wondering are heterogeneous panel cointegration techniques appropriate in this context? And what are the factors I should be considering when assessing if this sort of technique would be appropriate? Thank you