Acknowledgement

We want to thank the following collaborations and cohorts for having given us insight into their data exchange protocols:

• ART-CC
• CASCADE
• D:A:D
• EuroSIDA
• PLATO
• SHCS

We would also like to thank the following persons for contributing to the HICDEP protocol:

• Allen Sawitz    
• Andrew Phillips    
• Caroline Sabin    
• Céline Coline    
• Martin Rickenbach    
• Morten Svenson    
• Nina Friis-Møller    
• Olivia Keiser    
• Rodolphe Thiebaut    
• Sarah Walker    
• Stephen Hart    
• Zoé Fox