Clinical epidemiologу : the essentials /Robert H. Fletcher, Suzanne W. Fletcher, Grant S. Fletcher. edition5th ed., Wolters Kluwer/Lippincott Williams & Wilkins Health, c2014*. ISBN-13: 978-1451144475, ISBN-10: 1451144474
Clinical epidemiologу : the essentials /Robert H. Fletcher, Suzanne W. Fletcher, Grant S. Fletcher. edition5th ed., Wolters Kluwer/Lippincott Williams & Wilkins Health, c2014*. ISBN-13: 978-1451144475, ISBN-10: 1451144474