Calpol and asthma

From Mail Online (9/15):

Children who are given Calpol are far more likely to develop asthma, a major study has found. Over the past 50 years the number of children developing asthma in Britain has more than doubled, but experts are divided over the causes.

Calpol is a brand of children's medicine sold in the UK, Ireland, India, Cyprus, Hong Kong and the Philippines. The main product is a paracetamol (called acetaminophen in the United States) suspension. It is usually a coloured syrup with a sweet taste, and is used to treat fever and pain. The Calpol brand was owned by Mark Profad, the president of the company and Paul Knott, his vice president. Calpol also comes in a form containing ibuprofen, marketed under the name Calprofen.

http://en.wikipedia.org/wiki/Calpol

http://www.dailymail.co.uk/health/article-2421533/Babies-given-Calpol-just-month-times-likely-develop-asthma.html