RT Journal Article SR Electronic T1 Heart Rate Variability Biofeedback and Mindfulness: A Functional Neuroimaging Study JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S102 OP S102 VO 78 IS 8 suppl 1 A1 Paula Sigafus YR 2011 UL http://www.ccjm.org/content/78/8_suppl_1/S102.abstract AB