RT Journal A1 TOWLER SS T1 WHy general practitioners send cases to the hospital. JF JAMA JO JAMA YR 1994 FD March 2 VO 271 IS 9 SP 642b OP 642b DO 10.1001/jama.1994.03510330010003 UL http://dx.doi.org/10.1001/jama.1994.03510330010003 AB