DOI: 10.1055/s-00000059

Pneumologie

References

Burt CW, Schappert SM.
Ambulatory care visits to physician offices, hospital outpatient departments, and emergency departments: United States, 1999 – 2000.

Vital Health Stat 2004;
13: 1-70

Burt CW, Schappert SM.
Ambulatory care visits to physician offices, hospital outpatient departments, and emergency departments: United States, 1999 – 2000.

Vital Health Stat 2004;
13: 1-70

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