His Environmental health study frequently involves adjacent topics like Food group and Food frequency questionnaire. His Food group study frequently draws connections to adjacent fields such as Environmental health. His research ties Demographics and Demography together. He frequently studies issues relating to Demography and Demographics. His Optics study frequently links to related topics such as Incidence (geometry). His work on Optics expands to the thematically related Incidence (geometry). His research is interdisciplinary, bridging the disciplines of MEDLINE and Law. MEDLINE connects with themes related to Law in his study. His study ties his expertise on Latin Americans together with the subject of Linguistics.