TJ Mechanical engineering and machinery 2,036 human 1,576 Humans 1,220 male 802 female 753 Article 743 controlled study 684 adult 633 Male 483 article 483 Female 473 metabolism 426 Animals 372 animal 357 TP Chemical technology 353 nonhuman 350 physiology 350 genetics 333 Adult 320 TA Engineering (General). Civil engineering (General) 290 human experiment 244 young adult 221 procedures 207 TK Electrical engineering. Electronics Nuclear engineering 205 Young Adult 197 mouse 187 major clinical study 185 clinical article 179 middle aged 177 chemistry 172