Variation of focusing patterns of laterally migrating particles in a square-tube flow due to non-Newtonian elastic forceRemoveNaoto Yokoyama, Hiroshi Yamashita, Kento Higashi, Yuta Miki, Tomoaki Itano, and Masako Sugihara-SekiPhys. Rev. Fluids 6, L072301 (2021)