Acute and Short-Term Effects of Dry Needling in Patients with Chronic Nonspecific Low Back Pain and Hamstring Tightness: A Pilot Study oleh Mahnaz Bazzaz-Yamchi, Soofia Naghdi, Amin Nakhostin-Ansari, Monavar Hadizadeh, Noureddin Nakhostin Ansari, Ehsan Moghimi, Scott Hasson