Prior to the introduction of the Global Industry Classification Standard (GICSÂ®) in 1999, Standard & Poorâs used a classification system with 11 sectors and 115 industries, similar to the Standard Industry Classification (SIC), which was introduced in 1937.
Symptoms: Mood-change, lethargy,irritability,confusion,fatigue and memory problems and myself chest pain this past 5 months, could the gas be the problem? Doctor : Thank you for your question. Natural gas or propane inhalation for extended periods of time can lead to headaches, nause a, shortness of breath, dizziness, and altered mental status. It is quite likely that this exposure could be eliciting your symptoms.
Radon gas symptoms on humans. Common Questions and Answers about Radon gas symptoms on humans. gas. I was taking pro-biotics didn't help, I only drink bottled water(spring), I would never let my cat wear a flea collar, my house has been tested for lead, mold and radon. no chemicals on the lawn, I am now in Mahwah N.J.(North jersey).