We begin by thanking all the men who took part in EMIS-2017. EMIS-2017 was coordinated by Sigma Research at the London School of Hygiene and Tropical Medicine (LSHTM) in association with the Robert Koch Institute (RKI) in Berlin. EMIS core team @ Sigma Research (LSHTM): Axel J. Schmidt, Ford Hickson; David Reid, and Peter Weatherburn; in association with Uli Marcus and Susanne B. Schink @ RKI. EMIS NGO partners recruited 17% of all respondents through activities on Facebook and other social media and by placing EMIS banners on their websites. We thank all our partners for being part of something huge. The following list acknowledges all partners in EMIS by country. Individual names are mentioned if a freelancer was the main contact and/or translator or where input on the questionnaire development came from a person not formally representing an organisation. The order (if available) is: main NGO partner, other NGO partners, academic partners, governmental partners, individuals. Europe: PlanetRomeo, European AIDS Treatment Group (EATG), Eurasion Coalition on Male Health (ECOM), European Centre for Disease Prevention and Control (ECDC), European Monitoring Centre for Drugs & Drug Addiction (EMCDDA), European Commission (DG SANTE). AT: Aids Hilfe Wien, Dr Frank M. Amort. BA: lgbti.ba, Masha Durkalić. BE: SENSOA, exaequo, Observatoire du SIDA et des sexualités, Sciensano. BG: HUGE, GLAS Foundation, Dr Emilia Naseva, Petar Tsintsarski. BY: Vstrecha. CH: Swiss AIDS Federation, Cantonal Hospital St. Gallen, Centre Hospitalier Universitaire Vaudois, University Hospital Zurich, Fachhochschule Nordwestschweiz, Swiss Federal Office of Public Health. CY: AIDS Solidarity Movement, University of Cyprus. CZ: AIDS pomoc, National Institute of Public Health, Tereza Zvolska, Dr Michal Pitoňák. DE: Deutsche AIDS-Hilfe, Robert Koch Institute, BZgA, Dr Michael Bochow, Dr Richard Lemke. DK: AIDS-Fondet, Statens Serum Institut, François Pinchon, Jakob Haff. EE: Eesti LGBT, VEK LGBT, Estonia National Institute for Health Development, Dr Kristi Rüütel. ES: Stop Sida, CEEISCAT, Ministerio de Sanidad. FI: Positiiviset, Hivpoint, SeksiPertti, Trasek, National Institute for Health and Welfare. FR: AIDES, Coalition PLUS, SexoSafe, Santé Publique France, INSERM. GR: Ath Checkpoint, Thess Checkpoint; Positive Voice. HR: Iskorak, gay.hr, Zoran Dominković, Vjeko Vacek. HU: Háttér Society, Tamás Bereczky. IE: Gay Health Network, Man2Man, HIV Ireland, Outhouse, GOSHH, Sexual Health Centre Cork, AIDSWEST, Gay Community News, Health Service Executive, Gay Men's Health Service, Sexual Health and Crisis Pregnancy Programme, Health Protection Surveillance Centre, Mick Quinlan. IS: Samtökin '78. IT: Arcigay, Fondazione LILA Milano ONLUS, University of Verona, Dr Raffaele Lelleri. LT: demetra, LGL, Gayline. LV: Testpunkts, Baltic HIV Association, Dr Antons Mozalevskis, Indra Linina. MD: GENDERDOC-M. MK: Subversive Front, Dr. Kristefer Stojanovski. MT: Malta LGBTIQ Rights Movement, Allied Rainbow Communities, Infectious Disease Prevention and Control Unit, Silvan Agius, Russel Sammut. NL: Results in Health, Maastricht University, Amsterdam Pink Panel, Soa Aids Nederland, Rutgers, Rijksinstituut voor Volksgezondheid en Milieu, Dr Wim Vanden Berghe, Marije Veenstra. NO: Helseutvalget, Norwegian Directorate of Health, Folkehelseinstituttet, Dr Rigmor C. Berg. PL: Spoleczny Komitet ds AIDS, Kampania Przeciw Homofobii, Lambda Warszawa, National Institute of Public Health/National Institute of Hygiene, Dr Łukasz Henszel. PT: GAT Portugal, CheckpointLX, Associação ABRAÇO, rede ex aequo, SexED, dezanove, ILGA Portugal, Trombeta Bath, Instituto de Saúde Pública da Universidade do Porto. RO: Association “Eu sunt! Tu?”, PSI Romania, ARAS Romania, Tudor Kovacs. RS: Association Duga, Association Red Line, Omladina JAZAS-a Novi Sad, Institute of Public Health of Serbia, Sladjana Baros, Dr Marija Pantelic. RU: The Charity Foundation For Support of Social Initiatives and Public Health/LaSky Project. SE: RFSL, University of Gothenburg, Folkhålsomyndigheten. SI: ŠKUC, Legebitra, LJUDMILA. SK: PRIDE Košice, Light-House Slovakia, Slovak Medical University, Public Health Authority of the Slovak Republic, Dr Zuzana Klocháňová. TR: Pozitif Yaşam, Sami Sarper Yazıcılaroğlu. UA: Alliance for Public Health, alliance.global, msmua.org, Oleksii Shestakovskyi. UK: Terrence Higgins Trust, NAM, PrEPster, Antidote, Horizon Drugs and Alcohol Support, LGBT Foundation, Yorkshire MESMAC, MESMAC Newcastle, Derbyshire LGBT +, Trade Sexual Health, London Friend, GMFA, Spectra, International HIV Partnerships, International Planned Parenthood Federation, Bristol University, University College London, Sigma Research, Raul Soriano. Other: Dr John Pachankis, Dr Mark Hatzenbühler, Dr Valeria Stuardo Ávila, Dr Michael W. Ross.