To the Editor

Affiliation

• ¹ Metabolic Bone Disease Research Group, University of Extremadura, Nursing Department, Cáceres, Spain Metabolic Bone Disease Research Group, University of Extremadura, Nursing Department, Cáceres, Spain Metabolic Bone Disease Research Group, University of Extremadura, Nursing Department, Cáceres, Spain Servicio de Tocoginecología, Hospital San Pedro de Alcántara, Cáceres, Spain.