TY - RPRT TI - Relation between heart rate and problem behaviors. AU - R L Freeman AU - R H Horner AU - J Reichle PY - 1999 DO - 10.1352/0895-8017(1999)104<0330:rbhrap>2.0.co;2 UR - https://pubmed.ncbi.nlm.nih.gov/10450460/ ID - 10450460 ER -