1. Mattila S, Kostiainen S. Spontaneous pneumothorax. Scand J Thorac Cardiovasc Surg. 1977;11:259–63.
2. Hagen RH, Reed W, Solheim K. Spontaneous pneumothorax. Scand J Thorac Cardiovasc Surg. 1987;21:183–5.
3. Elfeldt RJ, Schroder DW, Thies J. Long-term follow-up of different therapy procedures in spontaneous pneumothorax. J Cardiovasc Surg (Torino). 1994;35:229–33.
4. Baumann MH, Strange C. The clinician’s perspective on pneumothorax management. Chest. 1997;112:822–8.
5. Melton LJ III, Hepper NG, Offord KP. Incidence of spontaneous pneumothorax in Olmsted County, Minnesota: 1950 to 1974. Am Rev Respir Dis. 1979;120:1379–82.