Pain is the most common reason for people to use complementary and alternative medicine. An analysis of the 13 highest quality studies of pain treatment with acupuncture, published in January 2009, concluded there is little difference in the effect of real, sham and no acupuncture. However other reviews have found benefit. Additionally, there is tentative evidence for a few herbal medicine. There is interest in the relationship between vitamin D and pain, but the evidence so far from controlled trials for such a relationship, other than in osteomalacia, is unconvincing.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was the treatment method of the 9 studies published in 2013?
Ah, so.. unanswerable

Due to the work nature of airline pilots, who often cross several timezones and regions of sunlight and darkness in one day, and spend many hours awake both day and night, they are often unable to maintain sleep patterns that correspond to the natural human circadian rhythm; this situation can easily lead to fatigue. The NTSB cites this as contributing to many accidents[unreliable medical source?]  and has conducted several research studies in order to find methods of combating fatigue in pilots.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Of what does the NTSB want to find a means of doing?
Ah, so.. combating fatigue

There are seven current masjids in the Greater Richmond area, with three more currently in construction, accommodating the growing Muslim population, the first one being Masjid Bilal. In the 1950s, Muslims from the East End got organized under Nation of Islam (NOI). They used to meet in Temple #24 located on North Avenue. After the NOI split in 1975, the Muslims who joined mainstream Islam, start meeting at Shabaaz Restaurant on Nine Mile Road. By 1976, the Muslims used to meet in a rented church. They tried to buy this church, but due to financial difficulties the Muslims instead bought an old grocery store at Chimbarazoo Boulevard, the present location of Masjid Bilal. Initially, the place was called "Masjid Muhammad #24". Only by 1990 did the Muslims renamed it to "Masjid Bilal". Masjid Bilal was followed by the Islamic Center of Virginia, ICVA masjid. The ICVA was established in 1973 as a non profit tax exempt organization. With aggressive fundraising, ICVA was able to buy land on Buford road. Construction of the new masjid began in the early 1980s. The rest of the five current masjids in the Richmond area are Islamic Center of Richmond (ICR) in the west end, Masjid Umm Barakah on 2nd street downtown, Islamic Society of Greater Richmond (ISGR) in the west end, Masjidullah in the north side, and Masjid Ar-Rahman in the east end.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What year saw the establishment of the Islamic Center of Virginia?
Ah, so..
1973