OBJECTIVE To analyze changes in the lag time to first disease modifying antirheumatic drug (DMARD) prescription since onset of symptoms of rheumatoid arthritis (RA) over the last 2 decades in Spain. PATIENTS AND METHOD Review of medical records of 865 patients diagnosed with RA living in Spain and attended in specialty care settings of the National Health System. The principal variable was th...

Clues of climate change on the Alashan Plateau since last glacial period (40 ka) are important for revealing mechanism desertification middle-latitude deserts in Northern Hemisphere (NH). Studies still rare understanding specific relationship changes between and global. Based a systematic comparative analysis existing research China international academic community, this paper reviews environme...