[Life expectancy in Mexico in 1968 and its decrease in relation to 1967].
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Adolescent↗
Biomedical subjects
M A Bravo Becherelle
Publications and source records attributed to M A Bravo Becherelle.
[Urgent need to improve health statistics in Mexico].
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Demography↗
[Advantages of using the International Classification of Diseases in hospitals].
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Disease↗