TY  - RPRT
TI  - Microprocessor-based memory device for ambulatory heart rate and physical activity recording.
AU  - M Makikawa
AU  - K Imai
AU  - T Shindoi
AU  - K Tanooka
AU  - H Iizumi
AU  - H Mitani
PY  - 1994
UR  - https://pubmed.ncbi.nlm.nih.gov/8177089/
ID  - 8177089
ER  -