Lung cancer is the most common cause of clubbing. Clubbing often occurs in heart and lung diseases that reduce the amount of oxygen in the blood. These may include: 1  Heart defects that are present at birth (congenital).
What is a safety management system (SMS)? A safety management system is a systematic approach to managing safety, including organisational structures, accountabilities, policies and procedures.
A safety management system is just a collection of documents describing how a business intends to respond to safety matters. Some are good and some are not so good â a lot depends on why the system is developed in the first place and the commitment of the business to make it work.