Funding for this research was provided by:
Agence Nationale de la Recherche (BIOTERRA - ANR - 13 - VBDU - 0005)
Received: 17 June 2019
Accepted: 7 December 2019
First Online: 20 January 2020
Ethics approval and consent to participate
: All participants in this study gave their consent for the sampling of their buildings.
: All participants in this study gave their consent for the publication of data concerning their buildings.
: The authors declare that they have no competing interests.