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| DNA testing | 
| DNA testing, direct detection of abnormal genes by | 
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| Dohle bodies | 
| Dombrock blood group | 
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| Doppler, fetal | 
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| Doppler echocardiography | 
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| Doppler studies, peripheral arterial | 
| Doppler studies, peripheral venous | 
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| DRE | 
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| DRIs | 
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| Drugs and Laboratory Test Outcomes |