Don't keep your distance.
D002648:Child; D002986:Clinical Trials as Topic / Q000941:ethics / Q000592:standards; D003142:Communication; D006801:Humans; D007855:Lead Poisoning; D008396:Maryland; D033282:Parental Consent; D011203:Poverty; D011639:Public Opinion; D012108:Research Personnel / Q000941:ethics / Q000592:standards; D035502:Trust