function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chittaro, Yannick & Sanchez, Andreas', 1],
    ['Jung, Hye Su & Yoon, Jung-Hoon & Joh, Kiseong & Seong, Chi-Nam', 5],
    ['Kim, Ji-Young & Park, So-Hyun & Lee, Dong-Heon & Song, Gwanpil', 1],
    ['Lee, Jae-Yun & Jeong, Yun-Seok & Kim, Pil Soo', 2],
    ['Liu, Weiwei & Shao, Chen & Gong, Jun & Li, Jiqiu & Lin, Xiaofeng', 2],
    ['Lu, Huibin & Deng, Tongchu & Liu, Feifei & Wang, Yonghong', 5],
    ['Mitter, Heinz', 1],
    ['Mitter, Heinz & A, Upper', 1],
    ['Motschulsky, Victor de', 1],
    ['Otto, Robert L.', 1],
    ['Otto, Robert L. & Karns, Ken D.', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);