Institution: | 1.Liaocheng People''s Hospital, Liaocheng 252000, China ; 2.Shandong Province Hospital of Occupational Diseases, Jinan 250000,China,1.Liaocheng People''s Hospital, Liaocheng 252000, China ; 2.Shandong Province Hospital of Occupational Diseases, Jinan 250000,China,1.Liaocheng People''s Hospital, Liaocheng 252000, China ; 2.Shandong Province Hospital of Occupational Diseases, Jinan 250000,China,1.Liaocheng People''s Hospital, Liaocheng 252000, China ; 2.Shandong Province Hospital of Occupational Diseases, Jinan 250000,China and 1.Liaocheng People''s Hospital, Liaocheng 252000, China ; 2.Shandong Province Hospital of Occupational Diseases, Jinan 250000,China |