3) KAUPPINEN M. T. The etiology of communityacquired pneumonia among hospitalized patients during a Chlamydia pneumoniae epidemic in Finland. J. Infect. Diseases. (1995) vol.172, p.1330-1335.
4) KAUPPINEN M. T. Clinical picture of communityacquired Chlamydia pneumoniae pneumonia requiring hospital treatment ; a comparison between chlamydial and pneumococcal pneumonia. Thorax. (1996) vol.51, p.185-189.
5) FOLLKERTS G. Virus-induced airway hyperresponsiveness and asthma. Am. J. Respir. Crit Care Med. (1998) vol.157, p.1708-1720.