sj-pdf-3-tar-10.1177_1753466620977408 – Supplemental material for The clinical effect of smoking and environmental factors in spontaneous pneumothorax: a case-crossover study in an Inland province

Supplemental material, sj-pdf-3-tar-10.1177_1753466620977408 for The clinical effect of smoking and environmental factors in spontaneous pneumothorax: a case-crossover study in an Inland province by Dohun Kim, Sang-Yong Eom, Chang-Seob Shin, Yong-Dae Kim, Si-Wook Kim and Jong-Myeon Hong in Therapeutic Advances in Respiratory Disease