of these , 35 had maternal and/or newborn urine test results that were positive for cocaine only ( cocaine group ) , 14 that were positive for heroin only ( heroin group ) , 17 that were positive for both cocaine and heroin ( cocaine/heroin group ) , and 20 that were negative for both , although the mothers admitted to cocaine use during their pregnancy ( cocaine history group ) .
C0009170
cocaine
C0032961
pregnancy