function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezdċk, Jan & Regalin, Renato', 9],
    ['Bezděk, Jan', 1],
    ['Cho, H. - W. & An, S. L.', 7],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Duan, Wen-Yuan & Wang, Feng-Yan & Zhou, Hong-Zhang', 8],
    ['Ekiz, Ali Nafiz & Şen, İsmail & Aslan, Ebru Gül & Gök, Ali', 1],
    ['Guskova, Elena V. & Akulov, Evgeny N. & Loshchev, Sergey M.', 3],
    ['Huber, Barbara & Gubelmann, Päivi & Büche, Boris', 1],
    ['Kimoto, Shinsaku & Gressitt, J. Linsley', 2],
    ['Lopatin, I. K. & Konstantinov, A. S.', 2],
    ['Nadein, Konstantin S. & Ahmed, Zubair & Sergeev, Maxim', 1],
    ['Romantsov, Pavel', 1],
    ['Sergeev, M. E.', 1],
    ['Wang, Feng-Yan & Zhou, Hong-Zhang', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    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);