TY - JOUR T1 - Atonomic nervous system changes in chronic obstructive pulmonary disease (Copd) patients JO - Journal of Clinical and Diagnostic Research PY - 2011/12/01 AU - Aggarwa LS AU - Meena A AU - Kaur N AU - Bachhal R AU - Sidhu RS ED - VL - 5 IS - 8 SP - 1533 EP - 1536 Y2 - 2025/06/09 ER -