function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bessudova, Anna & Firsova, Alena D. & Tomberg, Irina V.', 2],
    ['Bessudova, Anna & Likhoshway, Yelena V.', 1],
    ['Gusev, Evgeniy & Kapustin, Dmitry & Shkurina, Nataliya', 1],
    ['Gusev, Evgeniy & Kezlya, Elena', 1],
    ['Gusev, Evgeniy & Martynenko, Nikita & Shkurina, Nataliya', 1],
    ['Gusev, Evgeniy & Němcová, Yvonne & Kulikovskiy, Maxim', 1],
    ['Gusev, Evgeniy & Shkurina, Nataliya & Huan, Phan Trong', 1],
    ['Gusev, Evgeniy & Shkurina, Nataliya & Kulikovskiy, Maxim', 1],
    ['Gusev, Evgeniy & Tran, Hoan & Shkurina, Nataliya', 1],
    ['Gusev, Evgeniy S.', 1],
    ['Gusev, Evgeniy S. & Kulikovskiy, Maxim S.', 1],
    ['Kapustin, Dmitry A. & Gusev, Evgeniy S. & Lilitskaya, Galina G.', 23],
    ['Nemcova, Yvonne & Kapustin, Dmitry', 1],
    ['Němcová, Yvonne & Kreidlová, Jana', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);