function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bilous, Olena P. & Genkal, Sergey I. & Zimmermann, Jonas', 17],
    ['Flower, R. J. & Keatings, K. & Hamdan, M. A. & Hassan, F. A.', 2],
    ['Gladenkov, Andrey', 1],
    ['Hernández-Becerril, David U.', 4],
    ['Jordan, David Starr & Snyder, John Otterbein', 1],
    ['Kheiri, Somayyeh & Nejadsattari, Taher & Asri, Younes', 1],
    ['Kociolek, J. P. & Khursevich, G. K.', 6],
    ['Lameiro, Rubén A. & Cefarelli, Adrián O. & Vouilloud, Amelia A.', 1],
    ['Nikitashina, Vera & Stettin, Daniel & Pohnert, Georg', 1],
    ['Pearce, Christof & Cremer, Holger & Wagner-Cremer, Friederike', 1],
    ['Tremarin, Priscila Izabel & Ludwig, Thelma Alvim Veiga', 1],
    ['Vijver, Bart Van De', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);