function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Champion, George C.', 1],
    ['Champion, George Charles', 1],
    ['Chapin, Edward A.', 2],
    ['Miyatake, Mutsuo', 1],
    ['Murakami, Hiroyuki & Yamasako, Junsuke', 3],
    ['Murakami, Hiroyuki & Yamasako, Junsuke & Chou, Wen-I', 8],
    ['Murakami, Hiroyuki & Yang, Ganyan', 1],
    ['Pic, Maurice', 2],
    ['Schenkling, S.', 3],
    ['Westwood, John Obadiah', 7],
    ['Yajima, Tamio & Nakane, Takehiko', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);