1 INTRODUCTION  
2 OBSERVATIONS  
2.1 MOSEL Survey  
2.2 Keck/MOSFIRE observations and data reduction  
2.3 VLT/KMOS observations and data reduction  
2.4 Emission line flux measurement  
3 ANALYSIS AND RESULTS  
3.1 Spectral energy distribution fitting  
3.2 Final Sample Selection  
3.3 Spectral Stacking  
3.4 Stacking Results  
3.5 Detection threshold for the broad component  
3.6 Testing the broad component in simulated data  
4 DISCUSSION  
4.1 Outflow properties  
4.2 Outflows in extreme emission-line galaxies  
4.3 Possibility of gas inflows in MOSEL sample  
5 SUMMARY AND CONCLUSIONS