Nature CommunicationsMeasuring multi-site pulse transit time with an AI-enabled mmWave radarJiangyifei ZhuKuang YuanAkarsh PrabhakaraYunzhi LiGongwei WangKelly MichaelsenJustin ChanSwarun Kumar2026-05-25Full textDOI https://doi.org/10.1038/s41467-026-73453-x