Author response to a Letter to the Editor on "Introductory paper: High dose influenza vaccine".

Competing Interests: Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Mia Diaco reports a relationship with Sanofi Pasteur that includes: employment. Kevin Yin reports a relationship with Sanofi Pasteur that includes: employment. Bruce Seet reports a relationship with Sanofi Pasteur that includes: employment. Sandrine Samson reports a relationship with Sanofi Pasteur that includes: employment.