✅ Перевірена відповідь на це питання доступна нижче. Наші рішення, перевірені спільнотою, допомагають краще зрозуміти матеріал.
3 8-year-old male presents with episodic wheeze and non-productive cough which occurs particularly at night. He has been employed in the plastics industry. He is worried about relation of these symptoms to his work. Which of the following confirms his worries?