function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bojkova, Jindriska & Sroka, Pavel & Soldan, Tomas', 1],
    ['Chen, Xiao-Fang & Zhou, Chang-Fa', 4],
    ['Gattolliat, Jean-Luc & Samraoui, Boudjema & Benhadji, Nadhira', 1],
    ['Kaltenbach, Thomas & Mary, Nathalie & Gattolliat, Jean-Luc', 1],
    ['Kluge, Nikita J.', 26],
    ['Kluge, Nikita J. & Tiunova, Tatiana M. & Novikova, Eugenia A.', 1],
    ['Muthukatturaja, Marimuthu & Balasubramanian, Chellaiah', 3],
    ['Sroka, Pavel & Godunko, Roman J. & Soldán, Tomáš', 1],
    ['Yanygina, L. V. & Potapova, N. K.', 1],
    ['Zrelli, Sonia & Boumaiza, Moncef & Bejaoui, Mustapha', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);