function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ain & Šundić, Miloje', 5],
    ['Barbar, Ziad & Parker, Bruce L. & Skinner, Margaret', 7],
    ['Costa, Samuel Geremias Dos Santos & Klompen, Hans', 7],
    ['Ebrahimi, Najmeh & Noei, Javad', 4],
    ['HAITLINGER, Ryszrd & ŠUNDIĆ, Miloje', 30],
    ['Haitlinger, Ryszard', 5],
    ['Kamran, Muhammad & Alatawi, Fahad J.', 5],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 21],
    ['Mayoral, J. G. & Barranco, P.', 6],
    ['Saboori, Alireza & Hakimitabar, Masoud & Khademi, Narjes', 5],
    ['Saboori, Alireza & Hartmannh, Matthias & Hakimitabar, Masoud', 5],
    ['Saboori, Alireza & Shirvani, Zeinab', 42],
    ['Saboori, Alireza & Taemoori, Gholam Husein & Hakimitabar, Masoud', 6],
    ['Stalstedt, Jeanette & Laydanowicz, Joanna & Lehtinen, Pekka T', 40],
    ['Willmann, C.', 11],
    ['Other (52)', 96]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=295)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);