DOI: 10.1055/s-00000094

Zeitschrift für Gastroenterologie

References

Eisenberg DM, Kessler RC, Foster C, Norlock FE, Calkins DR, Delbanco TL.
Unconventional medicine in the United States. Prevalence, costs, and patterns of use. 
N Engl J Med 1993; 328 (4): 246-252  

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