Topal, E.; Demirtas, S.; Kutluturk, Y.; Kutluturk, K.; Turker, K.; Gamze Sayan, Y.; Alatas, C. The Effect of Modification of Inhaler spacer’s Visual User Guideline on the Correct Use of the Inhaler Spacer. annalsmedres 2021, 25, 0747-0750.