MOESM1 of Trends in insecticide resistance in Culex pipiens pallens over 20 years in Shandong, China LiuHongmei XieLihua ChengPeng XuJiabao HuangXiaodan WangHaifang SongXiao LiuLijuan WangHuaiwei KouJingxuan YanGuiyun ChenXiao-Guang GongMaoqing 2019 Additional file 1: Table S1. Mosquito sampling sites and times.