Effect of weight loss on bone mineral density determined by ultrasound of phalanges in obese women after Roux-en-y gastric bypass: conflicting results with dual-energy X-ray absorptiometry - Lima, Tatiana Pereira; Nicoletti, Carolina Ferreira; Marchini, Julio Sergio; Salgado Júnior, Wilson; Nonino, Carla Barbosa (Journal of Clinical Densitometry, 2014)