TY - RPRT TI - Physiological pacing: present status and future developments. AU - A Wirtzfeld AU - G Schmidt AU - F C Himmler AU - K Stangl PY - 1987 DO - 10.1111/j.1540-8159.1987.tb05923.x UR - https://pubmed.ncbi.nlm.nih.gov/2436168/ ID - 2436168 ER -