function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Byrd, Mitchell A.', 2],
    ['Campbell, Ronald A. & Munroe, Thomas A.', 2],
    ['Gaevskaya, A. V.', 1],
    ['Gaevskaya, A. V. & Rodyuk, G. N.', 1],
    ['Manter, Harold W.', 2],
    ['Parukhin, A M & Lyadov, V. N.', 1],
    ['Shimazu, Takeshi', 1],
    ['Toman, Gerd', 1],
    ['Wolfgang, R. W. & Myers, B. J.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);