https://www.selleckchem.com/pr....oducts/mps1-in-6-com
lower altitudes is very high. In these screened populations, pre-existing active TB or locally acquired infection are unlikely explanations. We suggest that adaptations to altitude combined with descent to higher oxygen levels in air at sea level may be contributing factors.Using a representative sample of European firms, we study whether financing constraints affect employers' investments in employee training and physical capital differently. We measure financing constraints with an index that combines survey and balance