function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ain & Šundić, Miloje', 2],
    ['Costa, Samuel Geremias Dos Santos & Klompen, Hans', 2],
    ['HAITLINGER, Ryszrd & ŠUNDIĆ, Miloje', 1],
    ['Haarder, Simon & Mąkol, Joanna', 3],
    ['Haitlinger, R. & Šundić, M.', 1],
    ['Haitlinger, Ryszard & Šundić, Miloje', 3],
    ['Hakimitabar, Masoud & Saboori, Alireza & Fadaei, Elnaz', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 5],
    ['Latreille, Pierre André', 1],
    ['Laydanowicz, Joanna & Mąkol, Joanna', 2],
    ['Mayoral, J. G. & Barranco, P.', 3],
    ['Saboori, Alireza & Hakimitabar, Masoud & Khademi, Narjes', 5],
    ['Saboori, Alireza & Hartmannh, Matthias & Hakimitabar, Masoud', 2],
    ['Saboori, Alireza & Shirvani, Zeinab', 7],
    ['Stalstedt, Jeanette & Laydanowicz, Joanna & Lehtinen, Pekka T', 12],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);