Expression of concern: 'Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage' (2022) by Grawunder et al.
Sven GrawunderNatalie T UominiLiran SamuniTatiana BortolatoCédric Girard-ButtozRoman M WittigCatherine CrockfordPublished in: Philosophical transactions of the Royal Society of London. Series B, Biological sciences (2022)