function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anistratenko, V. V. & Furyk, Yu. I. & Anistratenko, O. Yu.', 2],
    ['Georgiev, Dilian & Glöer, Peter', 1],
    ['Glöer, Peter & Erőss, Zoltán Péter', 4],
    ['Glöer, Peter & Hirschfelder, Hans-Jürgen', 5],
    ['Glöer, Peter & Mrkvicka, Alexander', 1],
    ['Glöer, Peter & Mrkvicka, Alexander C.', 1],
    ['Glöer, Peter & Pešić, Vladimir', 2],
    ['Glöer, Peter & Slavevska-Stamenković, Valentina', 2],
    ['Glöer, Peter & Varga, András & Mrkvicka, Alexander', 1],
    ['Haase, Martin & Wilke, Thomas & Mildner, Paul', 1],
    ['Marković, Vanja & Gojšina, Vukašin & Novaković, Boris', 8],
    ['Prié, Vincent & Bichain, Jean-Michel', 1],
    ['Radea, Canella & Parmakelis, Aristeidis', 1],
    ['Yildirim, Mehmet Zeki & Kebapci, Uemit & Koca, Seval Bahadir', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    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);