<a href="/hospitals/blk-max-super-speciality-hospital-delhi">BLK Max Super Speciality Hospital Delhi</a> - 17,025 reviews, <a href="/hospitals/memorial-bahcelievler-hospital-istanbul">Memorial Bahcelievler Hospital Istanbul</a> - 8,634 reviews, <a href="/hospitals/memorial-sisli-hospital-istanbul">Memorial Sisli Hospital Istanbul</a> - 7,476 reviews, <a href="/hospitals/sikarin-hospital-bangkok">Sikarin Hospital Bangkok</a> - 4,454 reviews, and <a href="/hospitals/teknon-medical-centre-barcelona">Teknon Medical Centre Barcelona</a> - 2,510 reviews are brain cancer centers with a significant number of patient feedbacks.