Replacing negatives with positives.
D000293:Adolescent; D000328:Adult; D002648:Child; D002673:Child, Hospitalized / Q000523:psychology*; D003214:Conditioning, Classical; D005260:Female; D006801:Humans; D007267:Injections / Q000523:psychology; D007743:Labor, Obstetric / Q000523:psychology; D009723:Nurse-Patient Relations; D010146:Pain / Q000523:psychology*; D011247:Pregnancy