About Berson Berson is certainly a UV disinfection expert based in holland, with installations worldwide. The business manufactures UV disinfection systems for municipal normal water, reuse and wastewater applications.. Angina Pectoris Causes Angina is classified among the following two types: Stable angina Unstable angina Stable angina may be the most common angina, and the sort most people mean when they refer to angina. People who have stable angina usually have angina symptoms regularly. The episodes happen in a pattern and so are predictable. For many people, angina symptoms occur after short bursts of exertion.‘That does not mean that it cannot work. But any treatment that does not have a body of encounter behind it can not be assumed to be effective.’ Galanter, who is not involved with Sheen’s treatment, said there’s strong proof that addicts can gain sobriety via in-patient treatment, or regular appointments to an addiction counselor. If the decision to rehab at home represents questionable judgment by Sheen, it’s not the only latest example.