Perceptions and attitudes about the contribution of the environment to childhood cancer: a pilot study in a medical guild and undergraduate students.

Background: Identifying and recognizing environmental risk factors for childhood cancer is crucial to prevent it. Medical guild are the first contact to monitor children's health. Therefore, courses about the contribution of chemical toxins in the environment and health outcomes such as cancer should be included in their professional training.

"Characterization of residential proximity to sources of environmental carcinogens in clusters of Acute Lymphoblastic Leukemia in San Luis Potosi, Mexico".

Background: Acute Lymphoblastic Leukemia (ALL) is the most prevalent neoplasia in children and teenagers in Mexico. Although epidemiological data supports that children's residence close to emissions from vehicular traffic or industrial processes increases the risk of ALL; and the IARC states that benzene, PAHs, and PM 2.5 are well-known environmental carcinogens, there is a gap in linking these carcinogenic hazards with the sources and their distribution from scenario perspective.

Preliminary human health risk assessment of arsenic and fluoride in tap water from Zacatecas, México.

Zacatecas state is located in the central area of Mexico, where the underground water contains elevated quantities of natural arsenic and fluoride. In order to estimate health risk associated with human exposure to these pollutants, tap water samples from the southern-central region of the state were analyzed. Ninety percent of the samples exceeded the levels of arsenic established by the World Health Organization (WHO) of 0.

Doppler ultrasound evaluation in preeclampsia.

Background: Worldwide preeclampsia (PE) is the leading cause of maternal death and affects 5 to 8% of pregnant women. PE is characterized by elevated blood pressure and proteinuria. Doppler Ultrasound (US) evaluation has been considered a useful method for prediction of PE; however, there is no complete data about the most frequently altered US parameters in the pathology.