1. Department of Thermalism, National Center of Natural and Traditional Medicine (CENAMENT), Havana, Cuba.
2. Department of Radiochemistry, Higher Institute of Technology and Applied Sciences (InSTEC), Havana, Cuba.
3. Central Criminalistic Laboratory, Havana, Cuba.
4. Chemistry Faculty, University of Havana, Havana, Cuba.
5. Thermal Center “San Diego de los Baños”, Pinar del Río, Cuba.
6. Geology Faculty, University of Pinar del Río “Hermanos Saíz”, Pinar del Río, Cuba.