“…However, specific cancers analyzed included central nervous system tumors, 30,36,49 noncentral nervous system solid tumors, 31,36,46 leukemias, 33,36,38,45 medulloblastoma, 41,43 retinoblastoma, 34 and melanoma. 39 Methods used to measure distance varied significantly, including use of the Great Circles Algorithm, 28,42,46 distance between midpoints of home address and treating facility, 29,32,48 and road driving distance using either ArcGIS or Google Maps. 30,31,39,45,49 The distance traveled was categorized variably and ranged from 0 to 5 miles 29 to 300+ miles.…”