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by Tintinalli, Judith; Ma, O. John; Yealy, Donald; et al.
by Cydulka, Rita; Cline, David; Ma, O. John; et al.
by Ma, O. John; Mateer, James; Reardon, Robert
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by Cline, David; Ma, O. John
by Cline, David M.; Ma, O. John; Cydulka, Rita K.; et al.
by Tintinalli, Judith; Stapczynski, J.; Ma, O. John; et al.
by Ma, John O.
by Meldon, Stephen W.; Ma, O. John; Woolard, Robert; et al.
by Ma, O. John; Cline, David; Tintinalli, Judith; et al.