Coughing up blood in the morning is one symptom of pulmonary embolism.
Monasterio de la Sierra is a municipality and town located in the province of Burgos , Castile and Leon , Spain .. Spain. Spain. Castile and Leon. Castile and Leon. Burgos. Burgos ( province ). province of Burgos. Burgos ( province ). According to the 2004 census -LRB- INE -RRB- , the municipality has a population of 43 inhabitants .. census. census. INE. Instituto Nacional de Estadistica ( Spain ). Category  : Municipalities in the Province of Burgos. Province. Provinces of Spain. Burgos. Burgos ( province ). Category  : Populated places in the Province of Burgos. Province. Provinces of Spain. Burgos. Burgos ( province )