Identity recognition statement of the world professional association for transgender health (WPATH). Issue 3 (3rd July 2018) - Knudson, Gail; Green, Jamison; Tangpricha, Vin; Ettner, Randi; Bouman, Walter Pierre; Adrian, Tamara; Allen, Luke; De Cuypere, Griet; Fraser, Lin; Hansen, Tone Marie; Karasic, Dan; Kreukels, Baudewijntje P. C.; et al.