All answers must be correct and detailed.

Marketing case study, Lakhani Watch Company and Sravya Watch Company were adjacent watch shops in Hyderabad. Both the shops vied with each other for market share. The owners of both the shops were close family friends. It was impossible for any function to be held in either family without the presence of the other family.

The owners of both the shops were looking forward to the new season for more business. Sales over the previous two months had been a bit dull because of the off-season period. The demand for watches was expected to increase during the upcoming marriage season, when customers would purchase watches for themselves or for their family members, or to give as gifts to their near and dear ones. Both the shops were trying innovative methods to promote their products and thereby capture the market. Slowly, as expected, sales began picking up. One day, Shobha Rao, wife of Narayana Rao, owner of Lakhani Watch Company, invited Shilpa Chetty, wife of Sunil Chetty, owner of Sravya Watch Company, to her house for some function.

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?