deletions | additions       diff --git a/section_Introduction_Chagas_disease_is__.tex b/section_Introduction_Chagas_disease_is__.tex  index beb9c58..2c33c85 100644  --- a/section_Introduction_Chagas_disease_is__.tex  +++ b/section_Introduction_Chagas_disease_is__.tex 
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Recent national estimates indicate that there exist at least one million people carrying the parasite with more than seven million exposed. Experts \begin{comment} aca como referencio a Diego Weinberg y Mundo Sano? \end{comment} underline the current difficulties faced by the national health systems where on average, only two thousand people are treated yearly. They add that even though governamental programs have been ongoing for years now \ref{plan_naciona_chagas}, data on the issue is scarse or hardly accessible. This presents a real obstacle to ongoing research and coordination efforts to tackle the disease in the region.  There exist different approaches in the literature that making  use of  mobilephone  data to study applied  epidemiological or health problems. \begin{comment} problems.\begin{comment}  La siguiente info la saco de aqui https://docs.google.com/document/d/1ZClgYFTLCxmg7wvRXqz2V1EP7Wcg0vd2ZwEBOLW2VOk \end{comment} Amy Wesolowski et al \ref{Wesolowski} quantify the impact of human mobility on Malaria disease movement in Kenya through with  disease prevalence information; Tizzoni et al \ref{Tizzoni} compare theoretical different  mobility models, modelling using theoretical approaches, available census data and models based on CDRs interactions to infer movements and compare all  models studied with Call Detail Records (CDRs), CDRs  and mobility census data to inferOther works directly work on CDRs to characterize human mobility. Inferences patterns of daily flow   \footnote{A complete survey of mobile traffic analysis articles may be found in Fiore, Naboulsi, Ribot & Stanica's work \ref{mobile_survey} }are explored in sarraut  Other works directly study CDRs to characterize human mobility and other sociodemographic information. \footnote{A complete survey of mobile traffic analysis articles may be found in Fiore, Naboulsi, Ribot & Stanica's work} Antenna usage is mostly explored in Sarraute et al. \ref{mobile_survey} to automatically detect large social-events in real time. Using the social graph to  Detail Record), también son utilizados para inferir propiedades y características sociales de