Suspected disease phenomenon: refers to people who treat minor physical discomfort as a serious disease and repeatedly check it. Especially when relatives, friends, neighbors, and colleagues die early due to a disease and die unexpectedly, this phenomenon is more likely to occur. Which of the following are suspected phenomena? ['A friend died due to illness, Wang was in a low mood and had no motivation for work for a period of time.', 'Due to the pressure of work and the death of relatives and friends, Li was overworked and hospitalized.', 'A worker died of lung disease, and because they worked in the same environment, everyone felt that they had lung disease.', 'Xiao Wang was hindered in the promotion of her title, and she suspected that individual colleagues in the unit were making trouble.']