TY - RPRT TI - Progressive postnatal changes in sinus node response to atropine and propranolol. AU - W T Woods AU - F Urthaler AU - T N James PY - 1978 DO - 10.1152/ajpheart.1978.234.4.h412 UR - https://pubmed.ncbi.nlm.nih.gov/645880/ ID - 645880 ER -