How to structure of a Ph.D. sandwich thesis?

I would like to know the main structure of this kind of thesis.

Although some guidelines can be taken from this post, additional details would be appreciated.

When building the introduction, I feel quite collapsed trying to join and describe all the aspects of the 3 published articles I have. This will be also the same for the final discussion. In fact, it makes me feel that I'm repeating myself what I've already written in the papers. I like DRY principle.

Thanks! Here is a preliminary outline:

• TABLE OF CONTENTS


• ACKNOWLEDGEMENTS


• LIST OF ABBREVIATIONS USED


• 
  

  SUMMARY

  
  


• 
  

  INTRODUCTION

  
  


• 
  

  HYPOTHESIS AND OBJECTIVES

  
  


• 
  

  MATERIALS AND METHODS

  
  


• 
  

  RESULTS

  
  


• 
  

  Paper1

  
  

  
  

  Time course Haemophilus parasuis infection reveals pathological differences between virulent and non-virulent strains in the respiratory tract.

  
  

  
  


• 
  

  Paper2

  
  

  
  

  Biofilm formation by virulent and non-virulent strains of Haemophilus parasuis.

  
  

  
  


• 
  

  Paper3

  
  

  
  

  Gene expression of H. parasuis in the lung using omics methods

  
  

  
  


• 
  

  DISCUSSION

  
  


• 
  

  CONCLUSIONS

  
  


• 
  

  REFERENCES

  
  


• 
  

  ANNEXES