1) Dr. Michael Wechsler is writing a letter of recommendation for Dr. Muhammad Zahid from his position as Professor of Medicine and Director of Asthma at National Jewish Health in Denver. 2) Dr. Wechsler previously worked with and mentored Dr. Zahid for over 5 years as Associate Director of the Brigham & Women's Hospital Asthma Research Center at Harvard Medical School, where Dr. Zahid held positions as a Research Fellow and Post-doctoral Research Associate. 3) In the letter, Dr. Wechsler describes Dr. Zahid as intelligent, hardworking, detail-oriented, and demonstrating high ethical standards in his clinical research work, and