Transactional segmentation is based on previous interactions your customer has had with your brand. Whilst it can draw on behavioral elements, it also has a much wider scope - considering the initial source of their registration with your business, how long it has been since their last order, and how many orders they've made overall.Yieldify worked with clothing retailer Turnbull & Asser to boost conversion rates on their online store. Offering free shipping to all their customers would have been too expensive, so Yieldify targeted a specific transactional segment of their userbase - offering free shipping to those with a set value of items already in their carts.

31 What is the cause of Pott's disease?

32 One thing that often baffles me is that patients with systemic lupus erythematosus often suffer recurrent thrombosis due to lupus anticoagulants (antiphospholipid syndrome). How can an anticoagulant cause thrombosis?

33 Are elevated homocysteine levels an independent risk factor for progression of systemic lupus erythematosus (SLE)/scleroderma? Kindly suggest some references if possible.

34 1. What are the indicators of remission in systemic lupus erythematosus (SLE)? Is it the normalization of erythrocyte sedimentation rate (ESR) and the disappearance of antinuclear antibodies (ANA) and other antibodies, or is it clinical improvement? 2. During remission of SLE, ANA and other antibodies disappear?

35 When should the use of cyclophosphamide in systemic lupus erythematosus (SLE) be commenced? What is the correct and safe dosage of cyclophosphamide?

36 1. Given the benefits of dexamethasone, which lacks any mineralocorticoid activity, why is this not prescribed in your book for diseases that require long-term steroid therapy, such as systemic lupus erythematosus or giant cell arteritis? 2. Does dexamethasone have more serious adverse effects than prednisolone? Why is it not generally preferred?

37 Would an elevated C-reactive protein (CRP) level, in association with a high erythrocyte sedimentation rate (ESR) and in the absence of infection and serositis, exclude the diagnosis of systemic lupus erythematosus?

38 How do steroids precipitate a crisis in patients with systemic sclerosis?

39 Are neck and face muscles commonly affected in poly- and dermatomyositis? Does this differ from the muscles that are affected with myasthenia gravis?

40 1. In dermatomyositis, what is the shawl sign? 2. How frequently is dermatomyositis associated with Gottron's papules?