European evidence‐based (S3) guideline for the treatment of acne – update 2016 – short version. (August 2016) - Nast, A.; Dréno, B.; Bettoli, V.; Bukvic Mokos, Z.; Degitz, K.; Dressler, C.; Finlay, A.Y.; Haedersdal, M.; Lambert, J.; Layton, A.; Lomholt, H.B.; López‐Estebaranz, J.L.; et al.