replace begin 2 with space may be inappropriate

[Lix1993]

An example:

2 Department of Pediatrics, Med. Fac. Semmelweis Univ., Tüzoltó u. 7, H-1094 Budapest, Hungary. [email protected] https://semmelweis.hu/english/faculties/medicine/departments-aok/2nd-department-of-paediatrics/

[Lix1993]

replace for Surg should be Surgery, not Sugery