RT Journal T1 PRoprietary medicines and the revenue stamp.a censorship for articles of the materia medica.jamaica-ginger drinkers' amblyopia. JF JAMA JO JAMA YR 2001 FD February 28 VO 285 IS 8 SP 987 OP 987 DO 10.1001/jama.285.8.987 UL http://dx.doi.org/10.1001/jama.285.8.987 AB