Viewpoint on the evaluation of severity and treatment effects in mild hidradenitis suppurativa: the cumulative IHS4 (IHS4-C) Viewpoint on the evaluation of severity and treatment effects in mild hidradenitis suppurativa: the cumulative IHS4 (IHS4-C) PMID: 38118429 DOI: 10.1159/000535867 ern_skin2024-09-20T14:45:14+02:00