TY  - RPRT
TI  - ["Acne and its subtypes" guideline].
AU  - H Gollnick
PY  - 2002
DO  - 10.1007/s00105-002-0360-x
UR  - https://pubmed.ncbi.nlm.nih.gov/12063743/
ID  - 12063743
ER  -