TY - RPRT TI - Inconsistent response to rapid atrial rhythms in a DDD pacemaker with the fallback feature. AU - N J Johnson PY - 1995 DO - 10.1111/j.1540-8159.1995.tb02611.x UR - https://pubmed.ncbi.nlm.nih.gov/7567602/ ID - 7567602 ER -