Seasonal variation in the incidence of congenital malformations in San Miguel de Allende, Mexico.
Valadez
A
A
University of Texas, Health Science Center, School of Public Health, Houston 77225.
Meltzer
A A
AA
D000013:Congenital Abnormalities / Q000453:epidemiology*; D006801:Humans; D007231:Infant, Newborn; D008800:Mexico / Q000453:epidemiology; D010507:Periodicity; D012307:Risk Factors; D012621:Seasons