- the Task Force EHIS (TF EHIS), the Technical Group Health Interview Surveys (TG HIS), the Public Health Working Group (PH WG), and the Group of the Directors of Social Statistics of the National Statistical Institutes[https://ec.europa.eu/eurostat/documents/3859598/8762193/KS ...23 KB (3,188 words) - 16:53, 30 October 2023