Notes
| 1926 data on the number of medical doctors (per 10,000 population) was calculated according to the following formula: the number of medical doctors in the county in 1926 divided by the number of inhabitants of the corresponding county on 1 January 1926, and multiplied by 10,000.
1930, 1939 data on the number of medical assistants (feldshers) and merciful sisters (per 10,000 population) was calculated according to the formula: the number of medical assistants (feldshers) and merciful sisters in the county on 31 December 1930 and 31 December 1939 divided by the inhabitants of the county on 31 December 1930 and 31 December 1939 and multiplied by 10,000.
1937 data on the number of medical assistants (feldshers) (per 10,000 population) was calculated according to the formula: the number of medical assistants (feldshers) in the county on 31 December 1937 divided by the inhabitants of the county on 31 December 1937 and multiplied by 10,000.
1938 data on the number of medical doctors (per 10,000 population) was calculated according to the formula: the number of medical doctors in the county on 31 December 1938 divided by the inhabitants of the county on 31 December 1938 and multiplied by 10,000.
1930 and 1939 data on the number of medical doctors, dental doctors and dentists, and midwives (per 10,000 population) are available in the Lithuanian Statistical Publications, except for the data for 1939 on the number of the medical staff (per 10,000 population) in Kaunas City and Kaunas County, Panevėžys City and Panevėžys County, Šiauliai City and Šiauliai County. The figures for the latter cities and counties are calculated according to the following formula: the number of medical doctors, dental doctors and dentists, and midwives in 1939 divided by the number of inhabitants of Kaunas City and Kaunas County, of Panevėžys City and Panevėžys County, and of Šiauliai City and Šiauliai County on the 31 December 1939 and multiplied by 10,000. Important territorial changes in 1920
According to the Soviet–Lithuanian Peace Treaty signed on 1920-07-12, the Vilnius Region passed to Lithuania. On 1920-10-07 Lithuania and Poland signed the Suwalki Treaty, which had to enter into force on October 10, and Poland also recognized the Vilnius Region as part of Lithuania. However, on 1920-10-09 Poland violated this treaty and its army occupied the Vilnius Region and it (Ašmena County, Lida County, Grodno County and Suwalki County and Vilnius City) became part of the Poland. Important territorial changes in 1921
When Latvia declared independence in 1918, and declared that the borders of the new state should follow the boundaries of the Courland Province, which was part of the Russian Empire. The decision meant that Palanga, which had been separated from the Vilnius Governorate in 1819 and annex to the Courland Province, would remain part of Latvia. The border dispute between Latvia and Lithuania was settled on 30 March 1921 with the signing of the Lithuanian-Latvian Border Treaty, which, with some exceptions, respected the borders of the Courland Province and Kaunas Province. Latvia received the northernmost part of Lithuanian‘s territory, while Lithuania received the coastal stretch of Palanga and Šventoji, and a small area near Zarasai. Important territorial changes in 1923
According to Treaty of Versailles on 1919-06-28 the Klaipėda Region was separated from Germany and ruled by France on behalf of the Entente Powers. After Lithuania organized the Klaipėda Revolt the military annexation of Klaipėda Region to the territory of Lithuania was carried out in 1923-01-10-15. After the Klaipėda Revolt the Entente Powers agreed on 1923-02-17 that Lithuania would take over the sovereignty of the Klaipėda Region. Further negotiations ended the signing of the Klaipėda Convention in 1924-05-08 according to which the Klaipėda Region passed to Lithuania on the basis of autonomy. Thus, since 1923-02-19 Klaipėda Region (Klaipėda County, Šilutė County and Pagėgiai County and Klaipėda City) belonged to Lithuania. Important territorial changes in 1939
However, on 1939-03-20 Lithuania received a German ultimatum demanding the return of the Klaipėda Region to Germany. With the consent of Lithuania the German army entered the Klaipėda Region in 1939-03-23. Therefore, Klaipėda Region (Klaipėda County, Šilutė County and Pagėgiai County and Klaipėda City) belonged to Germany.
On 1939-10-21 Vilnius region, which belonged to Poland, was occupied by the USSR troops. According to the Soviet-Lithuanian Mutual Assistance Treaty of 1939-10-10, the USSR ceded part of the Vilnius Region to Lithuania and the Lithuanian army entered Vilnius in 1939-10-28. After Lithuania regained the Vilnius Region were formed three counties: Švenčionėliai County, Valkininkai County and Vilnius County. In 1919, Pasvalys County was created with its centre in Pasvalys. However, at the end of the same year, the centre of the county was moved to Biržai by a government decision, as a result of a struggle over whether the centre of the county should be Pasvalys or Biržai. After this decision, the dual name of Biržai-Pasvalys County was used in 1919-1924 as a compromise. However, from 1925 the double name was dropped and the county was called Biržai County. |