Corrigendum to: Sleep during menopausal transition: a 10-year follow-up. Issue 12 (30th August 2021) - Kalleinen, Nea; Aittokallio1, Jenni; Lampio, Laura; Kaisti, Matti; Polo-Kantola, Päivi; Polo, Olli; Heinonen, Olli J; Saaresranta, Tarja