 Information most frequently deviating from other sources used in the study were that of contraindications and precautions, drug absorption and adverse drug events.A 2012 study reported that Wikipedia articles about pediatric otolaryngology contained twice as many errors and omissions as the medical database eMedicine.In a U.S. study in 2014, 10 researchers examined 10 Wikipedia health articles of the most costly medical conditions in the United States and found that 90% of the entries contained errors and statements that contradicted latest medical research.