Letters to the Editor: Topical retinoids and photosensitivity

Research-agenda Bias: letters to the editor

Letters Letter to the Editor

The good name of TEX One of the many wonderful things about TEX is that its behaviour is essentially the same, no matter where it runs. TEX is a fixed point, identical on all machines. The same goes for METAFONT and the Computer Modern fonts. The author of TEX, Donald Knuth, has made it perfectly clear that he does not object to anyone revising TEX(or METAFONT) just as long as the resulting pro...

Letters Letters n Editor:

“Fronti Nulla Fides”: No reliance can be placed on appearance. In a letter to the editor (AI Mugazine, Winter 1989), Benjamin Kuipers criticizes various points made in an earlier paper of ours (Akman and ten Hagen 1989). First, a side (nonetheless important) remark: Although Kuipers asserts that he distributes QSIM to interested researchers, our experience has been otherwise. Akman has tried tw...

LETTERS TO THE EDITOR Paracetamol and asthma

The study by Shaheen et al rightly pointed out that some patients with asthma deliberately avoid aspirin and are more likely to use paracetamol, hence a “consumer selection bias”. However, they failed to mention the “professional’s selection bias”. Any standard textbooks or prescribing references state that aspirin and other non-steroidal antiinflammatory drugs (NSAIDs) could potentially worsen...

Comments and Letters to the Editor

Several contrasting uses of the terms macro(large) and micro(small) pore can be identified in soil science literature. In some cases macropores are (i) considered to be pores > 15 (Marshall, 1959) or 100 /im in diam (Bouma et al., 1977) or (ii) implied to be even larger when described in terms of wormholes (Ehlers, 1975), root channels (Aubertin, 1971). and shrinkage cracks (Lewis, 1977). The s...