1. Pulmonary Function and Symptoms in Herbal Tea Workers
Robert M. Castellan, M.D., Brian A. Boehlecke, M.D., Martin R. Petersen, M.S., Terry D. Thedell, Ph.D., James A. Merchant, M.D., Dr. P.H. 
CHEST 
Volume 79, Issue 4, Pages 81S-85S (April 1981)
DOI: /chest.79.4_Supplement.81S
Copyright © 1981 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1 Symptom prevalence by exposure category.
CHEST  , 81S-85SDOI: ( /chest.79.4_Supplement.81S)
Copyright © 1981 The American College of Chest Physicians Terms and Conditions

3. FIGURE 2
Chronic cough prevalence by exposure category and smoking status.
CHEST  , 81S-85SDOI: ( /chest.79.4_Supplement.81S)
Copyright © 1981 The American College of Chest Physicians Terms and Conditions

4. FIGURE 3
Chronic bronchitis prevalence by exposure category and smoking status.
CHEST  , 81S-85SDOI: ( /chest.79.4_Supplement.81S)
Copyright © 1981 The American College of Chest Physicians Terms and Conditions

5. FIGURE 4
Mean FEV1 shift change and chest tightness developing during the study shift.
CHEST  , 81S-85SDOI: ( /chest.79.4_Supplement.81S)
Copyright © 1981 The American College of Chest Physicians Terms and Conditions