Open Access Research article

Detection of air trapping in chronic obstructive pulmonary disease by low frequency ultrasound

Katrin Morenz, Heike Biller, Frank Wolfram, Steffen Leonhadt, Dirk Rüter, Thomas Glaab, Stefan Uhlig* and Jens M Hohlfeld

BMC Pulmonary Medicine 2012, 12:8  doi:10.1186/1471-2466-12-8

Article Metrics

Total accesses

Article metric FAQ


  • Last 30 days: 117 accesses
  • Last 365 days: 1132 accesses
  • All time: 3576 accesses

These numbers are accesses on BioMed Central websites only, and an underestimate of total usage. More information