Received: 2 June 2020
Accepted: 20 January 2021
First Online: 6 February 2021
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: The study was approved by the Research Ethics Committee of the Hospital Universitari Arnau de Vilanova de Lleida de la Gerència Territorial ICS Lleida, Alt Pirineu i Aran—GSS (82/2014; 745/2018). The investigation was conducted according to the Declaration of Helsinki and the BCP (CHM9/ICH/135/95).
: An informed consent to provide sebum for research purposes was given by the donor and a written consent was obtained from the participant.