Declining severity of first attack of rheumatic fever.
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Animals↗
Biomedical subjects
L HERRERA
Publications and source records attributed to L HERRERA.
[Immunization of man against typhus epidemics by injections of avirulent Rickettsia prowazeki (CEPAE). Brief analysis with observations during a period of 3 years and averages as to the occurrence of typhus between vaccinated individuals and the control population in the zone on the Andes Peruanos. (Distrito de Ilave, Departamento de Puno)].
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Humans↗
The precision of percentiles in establishing normal limits in medicine.
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Biometry↗
The risk of biased selection in forward-going surveys with nonprofessional interviewers.
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Biometry↗
Bias in the allocation of treatments by random numbers.
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Bias↗
[In memory of Dr. Jiménez Guinea].
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Guinea↗
Effect of antihyaluronidase on the capillary fragility of the diabetic.
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Antibodies↗
[Immunization of man against epidemic typhus by infection with avirulent "Rickettsia prowazekii" (strain E)].
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Humans↗