Achim Kramer3 articles listing Achim Kramer in Nature Communications, PNAS, indexed by Paperzzz from Crossref and OSF.Role of PER-WDR5 interactions in the mammalian circadian clock Nature CommunicationsHairTime: A noninvasive assay for estimating circadian phase from a single hair sample PNASSteroid hormone receptors through Cry2 are key players in the circadian clock response to serum Nature Communications