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A Grünbaum coloring of a triangulation is an assignment of colors to edges so that the edges about each face are assigned unique colors. In this paper we examine the color induced subgraphs given by a Grünbaum coloring of a triangulation and show that the existence of connected color induced subgraphs is equivalent to the Three Color Theorem. A(More)
OBJECTIVE The purpose of this study was to determine whether mobility and physical activity were associated with lung function in adults with cystic fibrosis (CF). DESIGN This was a prospective cohort observational study in an urban, academic, specialized care center. Participants were ambulatory, nonhospitalized adults with CF. MAIN OUTCOME MEASURES(More)
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