function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bird, Lina J. & Kuenen, J. Gijs & Osburn, Magdalena R.', 4],
    ['Dubois, Alain & Bour, Roger', 1],
    ['Fan, Honghong & Wei, Guo & Chen, Xinlu & Guo, Hong', 1],
    ['Fesharaki-Esfahani, Monireh & Shahpiri, Azar', 2],
    ['Gunton, Laetitia M. & Kupriyanova, Elena K. & Alvestad, Tom', 1],
    ['Jung, Hye Su & Yoon, Jung-Hoon & Joh, Kiseong & Seong, Chi-Nam', 3],
    ['Jung-Hoon Yoon & Soo-Hwan Yeo & In-Gi Kim & Tae-Kwang Oh', 2],
    ['Kim, Young-Ok & Park, In-Suk & Park, Sooyeon & Nam, Bo-Hye', 1],
    ['Lee, Dongwook & Jang, Jun Hyeong & Cha, Seho & Seo, Taegun', 1],
    ['Lee, Jae-Yun & Jeong, Yun-Seok & Kim, Pil Soo', 5],
    ['Müller, Otto Friedrich', 13],
    ['Oshmarin, P. G.', 1],
    ['Ou, Fang-hong & Gao, Zeng-hong & Chen, Mei-hong & Bi, Jie-yi', 2],
    ['Steinbuch, Johann Georg', 1],
    ['WHIDDEN, HOWARD P.', 6],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);