human 176 Article 133 Humans 128 TA Engineering (General). Civil engineering (General) 116 HE Transportation and Communications 109 TP Chemical technology 103 TK Electrical engineering. Electronics Nuclear engineering 102 controlled study 98 metabolism 94 TJ Mechanical engineering and machinery 86 male 83 female 82 nonhuman 72 genetics 68 adult 61 article 52 Animals 51 Female 47 animal 47 unclassified drug 47 COVID-19 42 Male 42 Malaysia 40 China 34 Intelligent systems 33 Vehicles 33 animal experiment 33 chemistry 33 Sustainable development 31 T Technology (General) 31