P910: DOES MINIMAL RESIDUAL DISEASE OF STEM CELL COLLECTION HAVE PROGNOSTIC IMPACT ON PATIENTS WITH MULTIPLE MYELOMA? - X. Jingyu; Y. Wenqiang; F. Huishou; L. Jiahui; L. Lingna; D. Chenxing; D. Shuhui; S. Weiwei; X. Yan; Q. Lugui; A. Gang (HemaSphere, 2022)