FRANK PERLMAN, M.D.
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To the editor: In an exchange of letters in the May issue of the ANNALS OF INTERNAL MEDICINE (pp. 828-829) the question of efficacy of immunotherapy with pollen extracts is both challenged and defended. In recent months the FDA, in its broader scrutiny, has challenged the efficacy of drugs and biological preparations, including many vaccines. As a result, many drugs and vaccines are no longer available for treatment. A challenge to immunotherapy with pollen extracts and other allergens seems imminent if the guideline to proof of efficacy is to be based on presently known immunological tests.
Immunotherapy has been carried
PERLMAN F. Pollen Extracts. Ann Intern Med. 1972;77:663. doi: 10.7326/0003-4819-77-4-663_2
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Published: Ann Intern Med. 1972;77(4):663.
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