TY - GENERIC DO - 10.20944/preprints202205.0031.v1 UR - http://dx.doi.org/10.20944/preprints202205.0031.v1 TI - When Does the Human Embryonic Heart Start Beating? A Review of Contemporary and Historical Sources of Knowledge About the Onset of Blood Circulation in Man T2 - Preprints AU - Männer, Jörg PY - 2022 DA - 2022/05/05 PB - Preprints