000 00268 a2200097 4500
005 20220601023406.0
245 _aMMWR-Morbidity and mortality weekly report
260 _aAtlanta
_bU.S department of health and human services
_c1984
490 _vVol.33
_a1
942 _2lcc
_cCR
999 _c26239
_d26239