Cerri, Silvano, Ferruccio Bernabeo, Eleonora Valsecchi, and Giovanni Chiappino. “Occupational Asthma Due to Chamomile: Case Report”. La Medicina del Lavoro | Work, Environment and Health 108, no. 1 (February 15, 2017): 64-68. Accessed September 19, 2020. https://mattioli1885journals.com/index.php/lamedicinadellavoro/article/view/5733.