ERBB2 and micropapillary urothelial carcinoma: Isharwal Isharwal S S Huang Huang H H Nanjangud Nanjangud G G Intratumoral heterogeneity of ERBB2 amplification and HER2 expression in micropapillary urothelial carcinoma Intratumoral heterogeneity of ERBB2 amplification and HER2 expression in micropapillary urothelial carcinoma Hum Pathol Hum Pathol 2018 2018 77 77 63 63 69 69 supplied-pmid 29601842?