INTRODUCTION
2 OBSERVATIONS
2.1 Supporting ALMA and ATCA observations
2.2 APEX/FLASH
2.3 Herschel/SPIRE
3 RESULTS
3.1 Velocity profiles and line fluxes
3.2 Lensing
4 ANALYSIS
4.1 Comparison sample of nearby and distant galaxies
4.2 Observed [CII] to FIR ratios
4.3 Dust temperatures
4.4 Observed [CII] to CO ratios
5 DISCUSSION
5.1 Possible origins of the [CII] to CO correlation
5.2 Implications of different [CII] and CO(1-0) excitation temperatures
5.3 The [CII]/FIR luminosity deficit
6 CONCLUSIONS