function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abalo-Loko, Goudjo Ameto & Guelly, Kudzo Atsu', 6],
    ['Athira, S. & Daniels, A. E. D.', 2],
    ['Daniels, A. E. D. & Daniels, D. T. T.', 1],
    ['Dauphin, Gregorio & Gradstein, S. Robbert & Allen, Noris Salazar', 1],
    ['Fernandes, Rozijane Santos & Silva, José Augusto dos Santos', 3],
    ['Gomes do Nascimento, Géssica Maria', 5],
    ['Jarvis, Charlie', 6],
    ['Silva, José Augusto dos Santos & Fernandes, Rozijane S.', 1],
    ['Söderström, Lars & Hagborg, Anders & Konrat, Matt Von', 1],
    ['Thouvenot, Louis & Müller, Frank', 1],
    ['Xiang, You-Liang & Ma, Xiao-Ying & Shen, Chao & Lu, Shi-Hui', 1],
    ['Xiang, You-Liang & Zhang, Zhi-Xin & Chen, Sheng-Wen', 2],
    ['Özenoğlu, Hatice & Kirmaci, Mesut', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);