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doi.org/10.1034/j.1399-3003.1999.13d15.x, hdl.handle.net/1765/71278
The European Respiratory Journal
Erasmus MC: University Medical Center Rotterdam

Janssens, H., Devadason, S. G., Hop, W., LeSouef, P. N., de Jongste, J., & Tiddens, H. (1999). Variability of aerosol delivery via spacer devices in young asthmatic children in daily life. The European Respiratory Journal, 13(4), 787–791. doi:10.1034/j.1399-3003.1999.13d15.x