Impact of pleural effusion at an early period after posterior spinal fusion for adolescent idiopathic scoliosis on future pulmonary function and lung volume oleh Masahiro Ozaki, MD, PhD, Satoshi Suzuki, MD, PhD, Takehiro Michikawa, PhD, Yohei Takahashi, MD, PhD, Satoshi Nori, MD, PhD, Osahiko Tsuji, MD, PhD, Narihito Nagoshi, MD, PhD, Mitsuru Yagi, MD, PhD, Nobuyuki Fujita, MD, PhD, Morio Matsumoto, MD, PhD, Masaya Nakamura, MD, PhD, Kota Watanabe, MD, PhD