1793152 WKF worsening kidney function 9 1793146 WKF work function fluctuation 3 1793151 WKF woven Kevlar fiber 3 1793149 WKF WBN/Kob-Lepr fa/fa 1 1793150 WKF Weikangfu granule 1 1793147 WKF whole kurugua fruit flour 1 1793148 WKF World Karate Federation 1