All subjects (males, n=107) were divided into two egories: control subjects (56) and exposed beedi workers (51). ... Chattopadhayay BP, Saiyed HN, Alam J, Roy SK, Thakur S, Dasgupta TK. Injury into occurrence of Byssinosis in Jute mill workers. J Occup Hlth 1999;41:22531. Back to cited text no. 5 6. Chattopadhayay BP, Alam J. Spirometric function of ventilatory function of nonsmokers and ...