Correspondence (letter to the editor): Analysis not appropriate.
Siegfried
S
Thorm
D004341:Drug Evaluation; D004358:Drug Therapy / Q000706:statistics & numerical data*; D019317:Evidence-Based Medicine / Q000706:statistics & numerical data*; D040541:Marketing / Q000706:statistics & numerical data*; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data*; D011358:Product Surveillance, Postmarketing / Q000706:statistics & numerical data*