function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agarwal, R. K. & Agarwal, S. M.', 1],
    ['Ahmad, J.', 1],
    ['Akhmerov, A. H.', 1],
    ['Chauhan, A. S. & Khoche, B. Y.', 2],
    ['Dayal, J.', 3],
    ['Feng, Wei & Wang, Wei-Jun', 2],
    ['Gu, Chang-dong & Shen, J. - w.', 2],
    ['Layman, E. M.', 2],
    ['Lebedev, B. I.', 2],
    ['Nagaty, H. F.', 5],
    ['Ozaki, Yoshimasa', 3],
    ['Pandey, K. C.', 3],
    ['Verma, S. C.', 5],
    ['Wang, P. - q.', 3],
    ['Yamaguti, S.', 4],
    ['Other (23)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    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);