TY - RPRT TI - Effects of head-down bed rest on complex heart rate variability: Response to LBNP testing AU - Goldberger, Ary L. AU - Mietus, Joseph E. AU - Rigney, David R. AU - Wood, Margie L. AU - Fortney, Suzanne M. PY - 1994 UR - https://ntrs.nasa.gov/citations/19950039898 ID - 19950039898 ER -