1. Introduction

2. Sample

3. Observations
3.1. PACS photometry
3.2. PACS spectroscopy
3.3. JCMT spectroscopy

4. Results
4.1. Spectroscopy
4.2. Photometry
4.3. Spectral energy distributions

5. Dust models

6. Discussion
6.1. Median SED
6.2. The nature of [OI] 63 µm emission
6.3. Gas mass
6.4. Gas-to-dust ratio
6.5. Planet formation
6.6. Notes on selected sources

7. Summary