The chief of India\'s ruling Congress party Sonia Gandhi was released from hospital early on Tuesday just hours after being admitted, a doctor said. \"She complained of a headache and she had a cough,\" said the doctor who did not want to be named because he is not authorised to speak to the media. \"We checked all her parameters. Once the team of doctors was convinced that she was all right, she was discharged,\" he told AFP, adding that she was released about 3:00 am.