function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ariola, V.', 1],
    ['Baylis, H. A.', 1],
    ['Gu, C. - d. & Shen, J. - w.', 2],
    ['Ishii, N.', 2],
    ['Job, S. V.', 2],
    ['Ku, Chang-tung & Shen, J. - w.', 5],
    ['Lönnberg, E.', 1],
    ['Madhavi, R.', 1],
    ['Monticelli, F. S.', 2],
    ['Mordvinova, T. N. & Nikolaeva, V. M.', 1],
    ['Oshmarin, P. G. & Mamaev, Y. L.', 1],
    ['Parona, Corrado & Perugia, A.', 1],
    ['Pozdnyakov, S. E.', 1],
    ['Taschenberg, O.', 5],
    ['Yamaguti, S.', 6],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);