CropCircDB: a comprehensive circular RNA resource for crops in response to abiotic stress. - Kai Wang; Chong Wang; Baohuan Guo; Kun Song; Chuanhong Shi; Xin Jiang; Keyi Wang; Yacong Tan; Lequn Wang; Lin Wang 032; Jiangjiao Li; Ying Li; et al. (Database J. Biol. Databases Curation, 2019)