000 00274nam a2200097Ia 4500
008 220809s1997 xx 000 0 und d
041 _aeng
245 _aCirculation Vol.95, No.5-12, April-June 1997
260 _aUSA
_bAmerican Heart Association
_c1997
520 _aBack Volume
999 _c160519
_d160519