Corrigendum to "Leuprorelin combined with letrozole with/without everolimus in ovarian-suppressed premenopausal women with hormone receptor-positive, HER2-negative metastatic breast cancer: The LEO studyˮ [Eur J Canc 144 (2021) 341–350]. (May 2021) - Jeong, Jae Ho; Kim, Jeong Eun; Ahn, Jin-Hee; Jung, Kyung Hae; Koh, Su-Jin; Cheon, Jaekyung; Sohn, Joohyuk; Kim, Gun Min; Lee, Keun Seok; Sim, Sung Hoon; Park, In Hae; Kim, Sung-Bae