YZSMC, got through my stuff and i still have the letter attached on the form for medical where it was stated there that u have to do the mesical within 45days after receiving the letter and u should bring 3 passport size photo and present your hOngkong or PRC identity card or current passport.there are 3 designated medical practitioners where u could have your medical.i had mine with Dr. Y.K. Sun, Rm 1401-1403,wing on house,71 des voeux road,central,hk.tel.2840-1636. The other dr is Dr. Gabriel Chung ,Rm 1401,14/f,lane crawford house,70 queen's road central,hk tel. 2780-1103. And the other doctor is in kowloon just message me if you still need the address.gudluck and God bless