function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Arturo', 3],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 3],
    ['Aqmal-Naser, Mohamad & Ali, Norsyafira Anis', 1],
    ['Banyal, Harinder Singh & Kumar, Sanjeev', 1],
    ['Boulenger, George Albert', 1],
    ['Chan, Jeffery C. F. & Tsang, Alphonse H. F. & Yau, Sze-man', 5],
    ['Diniz, Paulo Baltazar & Siqueira, Hatus de Oliveira', 1],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 2],
    ['Esmaeili, Hamid Reza & Hamidan, Neshat', 3],
    ['Günther, Albert Charles Lewis Gotthilf', 2],
    ['Hui, Tan Heok & Peng, Kelvin Lim Kok & Huan, Liew Jia', 4],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 2],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 2],
    ['Çiçek, Erdoğan & Fricke, Ronald & Sungur, Sevil', 3],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 2],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    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);