IL‑1β and TNF‑α suppress TGF‑β‑promoted NGF expression in periodontal ligament‑derived fibroblasts through inactivation of TGF‑β‑induced Smad2/3‑ and p38 MAPK‑mediated signalsMaiko Maiko Ohta, Akira Ishisaki|International Journal of Molecular Medicine|2018Cited by 18