Treatment and outcome in metastatic lobular breast cancer in the prospective German research platform OPAL. 3. Mai 2023 Thill M, Zahn MO, Welt A, Stickeler E, Nusch A, Fietz T, Rauh J, Wetzel N, Kruggel L, Jänicke M, Marschner N, Harbeck N, Wöckel A, Decker T; OPAL study group. Breast Cancer Res Treat. 2023 Apr;198(3):545-553. doi: 10.1007/s10549-023-06882-7. Epub 2023 Feb 18. PMID: 36807725; PMCID: PMC10036409. Link