function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Antić, Dragan & Dražina, Tvrtko & Raða, Tonći', 2],
    ['Antić, Dragan & Makarov, Slobodan', 10],
    ['Antić, Dragan & Šević, Mirko & Barjadze, Shalva', 7],
    ['Antić, Dragan Ž. & Makarov, Slobodan E.', 69],
    ['Bachvarova, Darina & Vagalinski, Boyan & Doichinov, Aleksandar', 1],
    ['Dragan Ž. Antić & Tvrtko Dražina & Tonći Rađa & Luka R. Lučić', 1],
    ['Gilgado, José D.', 1],
    ['Kime, Richard Desmond & Enghoff, Henrik', 44],
    ['Nefedieva, Julia S. & Nefediev, Pavel S.', 2],
    ['Shear, William A. & Leonard, William P.', 3],
    ['Vagalinski, Boyan & Golovatch, Sergei', 3],
    ['Vagalinski, Boyan & Golovatch, Sergei I.', 5],
    ['Ćurčić, Bo Ž Idar P. M. & Makarov, Slobodan E.', 2],
    ['Šević, Mirko & Antić, Dragan & Stojanović, Dalibor', 2],
    ['Аntić, Drаgаn Ž. & Turbаnov, Ilyа S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=154)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);