The company's performance in 2013 was very strong despite the recent recession. However, the share price fell more than 2 per cent after the US Consumer Product Safety Commission reported that SMA Inc. had agreed to recall about 7,000 of its compact Series 7 utility tractors on the risk of serious injury or death to the operator. These tractors are sold to small or medium sized farms and whilst they have some technology available are not as sophisticated as the larger tractors sold to largescale farms. The largest market for 'high-tech' tractors is in the USA and Canada where large scale farming is common place. The typical sale to these farms are a tractor that is capable of synchronising the movements of a grain cart travelling alongside it as it harvests, as well as sensors within the machines that send out alerts to the farmer and the local SMA dealer if it fails.

1 Please explain the role of the sympathetic nervous system in the gastrointestinal tract.

2 What is the difference between a submandibular salivary gland swelling and swelling of a salivary lymph node?

3 How does Barrett's oesophagus develop?

4 Is it recommended to treat asymptomatic endoscopically diagnosed reflux oesophagitis with acid suppression and/or antireflux measures?

5 Is it recommended to give a young patient, diagnosed endoscopically to have mild reflux oesophagitis, life-long proton pump inhibitors (PPIs) to prevent the development of Barrett's oesophagitis?

6 Is it safe to give a patient with reflux oesophagitis who is on proton pump inhibitors (PPIs) for treatment of acid suppression, aspirin in antiplatelet doses (75-325 mg per day)?

7 Does a combination of magnesium and aluminium hydroxide salts, taken as antacid for reflux oesophagitis, have serious long-term adverse effects?

8 In the treatment of reflux oesophagitis with a proton pump inhibitor (PPI), should the PPI be life long or given for 4-8 weeks, as mentioned by the drug manufacturers?

9 Would a patient who suffers with reflux oesophagitis as a result of a hiatus hernia, and who is not responsive to proton pump inhibitors (PPIs), benefit from a highly selective vagotomy?

10 1. What are the causes of belching and what appropriate drug can be used? 2. What are the effects of smoking on the gastrointestinal tract and what is its role in peptic ulcer disease?