Systematic comparison of the protein-protein interaction databases from a user's perspective. - Akhilesh Kumar Bajpai; Sravanthi Davuluri; Kriti Tiwary; Sithalechumi Narayanan; Sailaja Oguru; Kavyashree Basavaraju; Deena Dayalan; Kavitha Thirumurugan; Kshitish K. Acharya (J. Biomed. Informatics, 2020)