TY - GEN AU - Bootsma,M AU - Swenne,C A AU - Janssen,M J A AU - Cats,V Manger AU - Schalij,M J TI - Heart rate variability and sympathovagal balance: pharmacological validation SN - 1568-5888 PY - 2003/// PB - Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation N1 - Publication Type: Journal Article ER -