title: [Preliminary design for establishment of registered occupational health doctors certification system in China].
authors: Min
authors: M
authors: Zhang
authors: Xie-yi
authors: XY
authors: Du
authors: Bing
authors: B
authors: Qiu
mesh_terms: D002568:Certification; D002681:China; D006801:Humans; D054538:Occupational Health Physicians